Katherine promised that both she and Alan would be happy to shave Amy's pussy very frequently that weekend, if the opportunity presented itself.

Amy was exceptionally happy to hear that.

But Katherine was pissed at having to sit and wait for the school to clear out with Amy. Brother is expecting me! We finally get to have sex, but here I have to wait? Arrgh! Cruel and unusual torture is what it is. Grrr!

When she finally deemed enough time had passed, she raced home on her bike as fast as she could and left Amy on her bike far behind.

Alan nervously waited for his sister at home, when she arrived about 10 minutes later than expected.

The two of them had already paved the way for their upcoming fuck session, and even future ones, the night before. They told Susan that a new club had formed, called the S Club, or Service Club. They said it was a club devoted to doing good deeds in the community, kind of like the Key Club, another club already popular at the school. There actually were clubs called the S Club which did just that, which was how Alan got the idea, but there was no established chapter in their high school yet so it made a great cover story.

The two further explained that tomorrow was the first meeting, and since the club had just started out, they would meet every Monday and Thursday. The membership was very small, because meetings were being held off-campus. Therefore, they needed to borrow the car. That was a necessary lie, because Kim's house was quite a distance away.

So Susan was delighted and readily agreed to loan the car any time they needed it for S Club. She encouraged them to join more such clubs, especially since it would look good on the college applications, which were coming up soon.

Susan even offered to drive them there, but Alan said that would make them look uncool to the other club members, who all had their own cars. (Surprisingly for such a rich family Alan didn't yet have his own car, but his father's car was essentially his since Ron was never around.)

Alan and Katherine managed to arrange to have sex with each other with their mother's full approval, in a certain sense. The ever-resourceful Alan had managed to procure a box of condoms as well.

Kim also phoned them and gave the all-clear sign, so everything was ready.

Alan drove. As they got in the car, he said, "Sis, you scared the shit out of me. I thought for sure you chickened out. Those last minutes before you showed up I was practically having a panic attack."

"Are you kidding, Big Tasty Brother? I wouldn't miss this for the world! You're going to make me a woman!"

They both settled in their car seats in the driveway, and Katherine leaned over to kiss Alan on the mouth.

He let the kiss linger, but when it was done he looked around frantically and said, "You're trying to kill me, you know that? We're still in our own frigging driveway! Mom could see! Just wait a few minutes, please!" He started the car.

"Sorry, Bro. Or should I say, Big Hard Sister-fucking Brother."

"Hey wait a sec." He put his head down on the steering wheel and inwardly groaned. "Sis, when you say things like that I feel so torn. Is what we're thinking of doing here really right? Is it, is it wrong? Even if you say no, isn't it going to end badly? Don't you feel a bad end coming?"

She held his head in her hands and turned it to look at her. "Listen to me, Brother. This isn't wrong. I love you. You love me. That's all that matters. Forget about the mores of the town. I don't care what they think or even know what the law is on this. This feels right. You know it and I know it. We love each other and always have, and this isn't going to end badly because we still will always be in love, no matter what happens. And Mom will love us even if we rob a bank. So let's just forget everything and have fun. I know I'm going to have a hell of a good time, and love every single, unforgettable second."

That made him smile. He kissed her deeply, though quickly. He was glad that he had, for he tasted a pleasing hint of mint on her lips and could smell the musky aroma of her skin. "I don't doubt you will. And you're probably right about everything. It just feels so momentous. It takes my breath away. But I'm so excited too. I'm all trembly. Let's get going before I die of anticipation." He turned the car engine on.

"Tell me about it!" she enthused. "I just get so uncontrollably excited thinking about the fact that we're going to be making love in mere minutes! I'm so turned on! Not only that, but the most interesting thing happened to me at school today."

"Really? what?" Alan asked as he drove the car out into the street. He thought whatever she would have to say could take his mind off of his lingering doubts.

While he drove down the road, Katherine talked dirty and told him the hot and sexy story of what had happened with Heather, Amy, and herself during cheerleader practice.

Since Susan might see them leave or return, they had to wear relatively normal clothing. Alan wore a T-shirt and long pants. Katherine wore shorts and a sweater. But once she left home she took the sweater off to reveal a tube top that had a slit down the front and that exposed all of her cleavage.

As they sped through traffic, Alan could look over and see Katherine's magnificent boobs jiggle and shake. He blessed the car's stiff suspension. He grudgingly admitted to himself that her boobs weren't nearly as big as the almost unnaturally massive tits of his mother or Suzanne, but they would still be the subject of masturbatory fantasies for just about any guy at school.

He thought, Between Amy and Sis, I've got the inside track on at least half of the most jaw-droppingly beautiful and big-breasted girls in the school. And then there are certain other women at home. Definitely a one in a million or even billion situation. Wow. And it was pretty much all caused by this freak medical treatment I've been given. Thank you, Dr. Fredrickson!

But despite all the women in his life, right now he could think of little else but his sister.

Within a few blocks of leaving the house, Katherine sat down in the space in front of the passenger's seat so her brother could better see the show she put on. She grasped at her breasts through her top and pulled down her short shorts past her knees so she could frig herself.

Alan was freaked out that she now wore nothing but a tube top, but as she was crouched down, no one could really see what she did or didn't wear. He had to make a deliberate and constant effort not to peek at her pussy for fear of crashing the car.

As she continued to tell her arousing story, she reached over and placed her hands on the bulge in Alan's pants. She began to massage it through his clothing as if that was the natural thing to do.

Alan prayed that they would get to Kim's house soon, before he had an accident. Between her story and her hands, his doubts about incestuous sex completely disappeared from his mind. Lust took over.

She stopped telling her story and said to Alan, "You really need to get new pants, because this one has a defective zipper. Look - it's unzipping all by itself!" She giggled and pulled his zipper down as she said this.

Alan placed his hand over the opened fly to prevent her from going any further. "Sis, you can't! I'm driving, for fuck's sake. How would you like to get us killed right before our big moment?"

She was unfazed, and giggled, "Hey, don't blame me - it's the zipper." She knew Alan had to keep at least one hand on the wheel, so with one more hand than him in the fight, she managed to get his hand out of the way and pull out his erection.

"No, Sister, no!" he cried in a very agitated state. "Please! I beg you!" The car stopped at a stop light, and he pulled at his hair with both hands in frustration and sexual arousal. "We're gonna die. I know it. Die." He said this dramatically and fatalistically.

They started moving again, and as though to drive the point home, he nearly struck a mailbox on the side of the road and missed it, he was sure, by mere inches.

"See?!" he griped.

When they stopped at another stop light he stared at his sister wide-eyed with fear even as she steadied herself from the slight jolt. Luckily no police cars were around to see the near-accident. He was worried the police would think he was driving drunk.

"Chill already," Katherine chided him. "Okay, fine. If you're such a bad driver, your loss. I'll concede this wouldn't be the best time to die. How 'bout this? I promise I won't give you a blowjob while you're driving as I'd planned, and I'll take it easy until we come to stops at the traffic lights. Like this one."  

She frantically jacked him off until the light changed and then just held his throbbing erection in her hands as he drove on while she waited for the next light.

She resumed her story, but Alan was too focused on her hands and trying to prevent an accident to pay attention to her words anymore.

Still, her ministrations on his penis didn't really stop, they just slowed down, and it drove him out of his mind with desire. She kept jokingly asking, "Are we there yet?" which didn't make things any easier on him.

CHAPTER 2

After a fifteen-minute drive, they finally reached Kim's house.

They were both so worked up that neither of them had the slightest reluctance to fuck each other anymore.

Alan pulled the car into Kim's driveway and they ran into Kim's house as fast as their feet could carry them. He sported such a massive wet spot around his groin area that it looked almost as though he'd pissed on himself. But he didn't care how funny he looked - he just wanted to get to a bed.

Katherine practically ran over Kim, who stood in the front doorway to open the door.

Kim was still dressed in her cheerleader uniform, which showed off her trim and petite figure nicely.

Katherine briefly French kissed and groped her. She was very grateful for how Kim had handled her blackmail opportunity and helped make this possible. She frantically asked her, "Where's the bedroom?" It was clear that she did not want to waste another moment. If her voice wasn't a clear enough indicator, then her nipples certainly were; they were so erect that even her areola looked puffier than usual.

Kim just smiled and pointed upstairs.

Brother and sister ran upstairs in a flash.

They sat on the bed as Katherine urged, "Quick, Bro, get the condoms!" They'd had plenty of foreplay in the car, and were ready to dive right in.

Clothes flew into the air as Alan fumbled around with the condoms.

Katherine impulsively reached out for Alan's hand. She suddenly appeared calm as she said, "Brother, thank you. I know that this is going to be the greatest, most exciting day of my life. And the best part has just started! In a minute, neither of us will be virgins anymore."

The two held hands for a brief pause. He looked in his sister's brown eyes, saw the passion and excitement there, and said, "I love you, Little Sister!"

She looked back with a high, rosy color in her cheeks, and said, "I love you, too, Big Brother! And I'm so glad we've found a new way of loving each other."

They kissed with passionate intensity. Katherine's heaving breasts brushed against Alan's chest; her nipples were hardened rocks which poked into him like hot coals.

Katherine finally pulled him away. "That's great, but let's not wait another second!" She lay down on Kim's bed face up, and said, "I'm waiting for your big dick!" To further illustrate her words, she opened her thighs wide and ran an index finger over rigid clit, which was engorged and stood out from its hood proudly.

Alan sat up on the bed, straddled her, and positioned his penis above her fuck hole. Drops of pre-cum fell onto her shaven mound. He looked at her and she wordlessly gave approval for him to go on as she hooked her heels around his waist. He took a big breath and tried to clear his mind. His whole world, now, was his sexy, lust-filled sister.

She writhed beneath his body in impatient anticipation. She was hot and willing to accept him into her body fully and completely.

She breathed up at him, panting and panting. She thought, I feel like I've just run a marathon, and we haven't even started to fuck yet!

And, as wonderful as it felt to slowly slide his insistent penis into his sister's depths, even more wonderful was the sense of oneness and love he felt radiating between himself and his sister like an invisible field of energy.

There were a million things he could say, but all he could manage was a guttural "Ugggghh!"

"Oh, yeeeeesssss!" she yelled in return, a cry of release and pleasure. Although she'd never had a penis inside her before, from the very first instant it was in her, it felt fantastic. She felt the fullness, heat and rigidity of her brother's penis as it moved and throbbed deep within her. His whole body covered her and enveloped her.

They fiercely clutched their hands together.

Already she began to feel the onset of mini-climaxes, even though Alan had not yet begun to move inside her body. She was very glad that her hymen had been accidentally broken five or so years ago, so there was no pain or blood, only the sense of being incredibly stretched to fullness. She could feel her brother's hot breath beat down on her neck.

Alan slowly pushed his penis in until he felt it could go no further, sure that he'd hit the impassable entrance to his breathless sister's cervix. He stayed there for just a moment, to enjoy the feeling of being so deep within her.

Impatient, she subtly wiggled her hips beneath him. She was eager for more.  

So he slowly began to pull it back out. The coolness of the air around the shaft as it emerged was in extreme contrast to the heated depths he'd enjoyed just a second before. Then he pushed in again slowly, as though driven by a deep, primal urge. Then out. In and out.

He built up a rhythm and reveled in the fact that his sister, too, had begun to move in sync with his gentle thrusts. His sister, athletic cheerleader or not, had always seemed so soft and fragile from his protective, brotherly point of view. He didn't want to hurt her.

When her upward thrusts became more powerful, worries about her fragility subsided. He began to push his thick meat into her body all the way up to the hilt.

She wrapped her arms around the back of his, holding on to him as if she were on a wild roller coaster ride.

Out of the blue, Katherine started screaming, "Yeeeeesssss! My brother is fucking me!" Her plentiful breasts moved madly with the motion of Alan's thrusts and she loved that and everything else so much that she had to let it out. The sound carried into every room of Kim's house, but Kim had assured them earlier that they could yell to their heart's content and the neighbors would never hear, provided they kept the windows closed.

Kim meanwhile sat in the room next door and fucked her own pussy with a dildo as she got off on their sounds and screams. Even from a room away, she could already start to smell the pungent odor of their sex. It drove her wild with envy and passion. She shoved the dildo as deep inside her as it could go as she imagined what it would feel like to be plowed like Katherine's was getting plowed just one room away. She may have not liked men, but she'd decided she really liked Alan's penis.

"We're fucking! We're fucking!" screamed Alan joyously. He, too, reveled in the freedom to yell to his heart's content, after weeks of furtively and quietly sneaking around in his secret sexual life. He yelled as loud as he could, "I'm fucking my own sister, and I don't care! Wooo yeah!"

Their thrusts were no longer anything like the soft shoves from a moment before - they were steaming along in an insistent and solid rhythm.

Alan pistoned his penis into her as deep as it would go. He marveled at the hot-cold-hot-cold sensation of each insertion and extraction of his penis as it pounded into her, seemingly on its own volition.

"Fuck me! Fuck me! Fuck me!" she yelled in time to his thrusts as her large breasts slapped against his body. "More! More!"

There was no pretense at drawing anything out. They just wanted to cum as fast as humanly possible. Arms and legs became a blur of activity as they threw their bodies into one another and the powerful scent of sex literally poured out into the room from where they were joined in incestuous abandon.

Things moved at a feverish pitch until neither brother nor sister could hold back any longer. Both teenagers stiffened as their bodies cried out for release. They reached climax together while yelling a seemingly endless stream of incoherent screams.

Alan felt his jism course through his prick, like a fire hose suddenly filling up with water. Then his semen exploded out of his penis and filled the depths of his sister's vagina. He thought, I'm doing it! I'm doing it! It's happening! He continued pushing his penis deep inside her and, almost instinctually, stopped on the downstroke so that he could completely fill her up with his seed.

Katherine felt the coursing and throbbing of his penis, timed to the beat of his heart. Then she felt the splash of his seed as it filled her pussy, flooding her with tremendous warmth. All of a sudden it occurred to her that she shouldn't be feeling such sensations. The condom! Where's the condom? Too busy kissing - we forgot! Ah, hell. Just sit back and enjoy it. Oh fuck! God! So good! Screw it! Screw ME!

She calmed down enough to begin making sense with her screaming, and shrieked, "Screw me! Screw me! Screw me!" over and over.

Alan collapsed onto Katherine. The two just lay quietly for a minute, as they recuperated and breathed heavily from their exertion. Both of them could feel Alan's semen as it slowly bubbled out of Katherine's cum-filled pussy and around her brother's semi-erect penis.

He rose just slightly enough off her body so that he could look into her eyes. All he saw there, as she looked back up at him, was love, tenderness and deep appreciation.

Alan asked, "Did that hurt at all?"

"Not in the slightest," she replied. "It felt like your cock was born to be inside of me. A finger or dildo just doesn't compare with the real thing! Now that I know how good it feels, I want your cock inside of me every minute. Every minute of the day. Brother, do you promise to fuck me every minute of the day, for the rest of our lives? Will you make me your complete fuck tool?"

"I'll try my best," he answered, and laughed gaily.

Yes! Yes! a joyous voice inside his head continually shouted while she happily squirmed in joy beneath him. He was on the highest of highs.

He thought out loud, "You know, it's really amazing to finally fuck a woman. But for that woman to be you, my sister, it's just out of control. I can't believe it."

Katherine hugged him firmly, and said, "I know. It's my first time too. We're on the same wavelength. But let's do it again, already!"

"Okay! I should have no problem getting ready to go with you to arouse me. But you know, it's funny, I'm really thirsty all of a sudden."

"I'll get you some water!" they heard Kim yell at them. They hadn't closed their door and she could hear even their whispers.

A minute later she walked in with a glass of water in her hand. She was buck naked now, like them, and pussy juice visibly dripped down her legs. "Don't mind me," she said. "I'll leave you two alone for your special time together, but I just had to say you two are fantastic."

She handed the water to Alan. "I'm shaking like an earthquake in the next room, just from hearing the sounds of you two. I can't wait to watch, or even get that big thing stuffed inside of me. I wish I had a brother to fuck too, but I'm an only child. Now drink up, big boy, and give us round two."

They all smiled at each other. "Alan, your fuck toy is waiting for you," Kim added in a husky voice, with a strong emphasis on "fuck toy." She walked back out of the room.

CHAPTER 3

Alan said to Katherine, "I like the sound of that, what Kim just said: fuck toy. Are you my fuck toy?"

"You know it!" she replied enthusiastically. "I live just to be fucked by you! Now I can tell you something. I've wanted your thing deep inside me even before you started your medical treatment. I've secretly wanted it for years, ever since I saw you naked and aroused in the shower one day. That's why I never went all the way with any guy, and was so prudish. Well, that, and trying to be like Mom.

She continued, "But I don't think I ever would have acted on it if it weren't for what happened these past few weeks. I figured you were - and still are - such a good-hearted, morally upstanding guy that you'd hate me if I expressed any sexual feelings towards you. And I was chicken. God, I was unhappy sexually and didn't really understand why. I could barely even admit my feelings to myself. But now that's all over, thank God, 'cos I have you."

Alan was very surprised by all that. He was fairly amazed she would eagerly call herself a fuck toy and the rest was even more amazing. He never had the slightest clue she felt this way. He decided he'd mentally absorb all this information later and just get back to fucking.

Seeing him start to reposition himself, she eagerly began to do the same. "Let's fuck some more!"

"Okay," Alan said at first, but then he paused. "Hold on, Sis. I have some bad news. Do you realized we forgot to use a condom?"

"Really? You're right. Oh well. You could be a father." She seemed completely unfazed by this news and appeared far more interested in getting his unsheathed erection back inside of her. She held it and drew it closer to her cum-smeared pussy lips.

"Wait a sec! Just hold on! Is that all you're going to say, ho hum, you could be a father? We're talking an incestuous pregnancy here!"

"I know, and it gets me hot! Big Brother, I don't think you understand the whole fuck toy concept here. Fuck toys don't complain, they don't make demands, they just get fucked. My pussy is now yours to use as you please, and so is my womb. The way I figure, if you get me pregnant then we'll be bonded together in a new and powerful way, and you'll just fuck me and love me even more than you already do."

Alan looked stricken.

Katherine changed her tune. "Aww, don't be like that. I know you're not ready for kids yet, and I'm even younger than you. That's why I'm on the pill already."

"You are?!"

"Yep! Admittedly, not for long just yet, but I'm wearing a diaphragm, too. AND I've got a day-after pill, just in case. We're totally covered."

"Phew! You scared me there. But don't you think a condom would be good just to be that much safer?"

"Nope. I took all these precautions 'cos I wanted to feel you bareback the first time and every time. That's how you fuck a fuck toy: bareback. Why should you care if you're knocking her up, all that matters is that she has a cunt and you're going to use it as you like to get your pleasure."

"Whoa, Sis, that's not how I look at it at all. A guy has to respect the girl's feelings and ask her if-"

She interrupted as she climbed on top of him, "Hey! I've been fantasizing about being a fuck toy for a long time now. Can't you just humor me and do the touchy-feely sensitive guy thing another day? I guarantee you won't knock me up, but we can pretend otherwise. That's the fun of it!"

By the time Alan got a chance to reply, "Okay," she had already sat down on his pole and was balls deep.

He joked, "I guess that's a 'no' to using a condom, then."

"No" she said as she raised herself up and impaled herself back down. "Ahhh! In fact," - she raised herself up again, - "It's pretty much a rule that fuck toys always get fucked" - she lowered back down - "bareback!"

Alan thought with amusement, For all this supposed 'fuck toy' talk, in fact she's the same feisty and demanding Katherine as ever. But that's just how I love her to be. Though I got to admit I could get into the sister as fuck toy fantasy myself! Big time.

After raising herself up and impaling herself back down more times than they could easily count, she shouted, "Fill me up! Let's not leave the little spermies in there all lonely. Give them some new friends!"

Alan commented, "Wow, you are one sexy woman. Dangerously horny, too!"

"Mmm. Big Sexy Sweaty Brother, this time let's take our time." She clenched her pussy muscles tightly and wiggled her bottom. The feeling of fullness while she sat on top of her brother with his penis buried so far up inside of her nearly overwhelmed her, it felt so great.

Alan was happy with that idea.

They proceeded much more slowly, like they fucked in slow motion. He gradually pushed his penis deeper and deeper, up to the very hilt, and then pulled back just as slowly until all but the tip of his penis was out of her pussy. Then he did it again. And again. He watched with awe as his sister's tits began to bounce slowly with each upward thrust of his penis.

That made Katherine arch her back in response, hopeful that she could impale herself on his stiffness.

"In these few weeks of my limited sexual experience, I learned that delayed gratification is twice as sweet. Let's hold off as long as we can and take our time. Not only that, but I do have the condoms in the car, now that I think about it. Now would be as good a time to get them as any."

"Don't you dare! Make me a mommy!"

Alan confirmed, "Fuck toy fantasy, right?"

"Right."

"Good."

While she was still relatively calm from resting, she explained, "You gotta understand, Brother. With a fuck toy, there's no breaking up, ever. There's no cheating, no running off with some hunky lifeguard. There's no, 'Sorry, I've got a headache.' Well, not unless I was like violently vomiting or something. Basically, my cunt belongs to you for as long as you want it."

He began to pound his sister with renewed vigor. He was getting off on her ideas. But he asked, "You mean, you're not going to still date other guys? I assumed you would."

She giggled, "I know what you're thinking, Bro! You're thinking, 'If she's gonna be exclusive with me, then it's expected that I'm gonna be exclusive with her.' Nope! Fuck toys don't complain about sharing. In fact, I think it's only polite if you give Kim a good pumping before you go."

"Really?!"

"Really!"

They were getting to worked up with their piston-like movements to talk much more about it, but Alan decided he was really warming to the whole fuck toy idea.

"Last time was good," said Katherine, "but give me all you've got this time!"

"Hey, I gave you all I had last time," he chuckled.

"Give me more! Even more! Fuck me! Go deep! Break me in two! Fuuuuuccckkk meeeeeeeeee!"

Alan gladly obeyed her. He literally bounced his hips up and down on her body, making his shaft slide thoroughly in and out of her. He would rise up and his penis would be completely exposed to the air and then he would pile-drive the pole right back into her upturned pussy as far as he could go.

They screamed and squirmed and climaxed. Sweat flew everywhere and Alan's cum shot off deep inside. He realized it was a very satisfying feeling to fill up a pussy. He got off on the idea of "marking" his women with facials and pearl necklaces, but he decided there was no more definitive way to claim a woman that shooting off in her vagina.

As they lay back and rested again, Kim poked her head into the room. "Thumbs up on round two, y'all," she said as she flashed them the thumbs-up sign.

They all laughed.

And then Kim said, "That gives me an idea," and stuck her thumb up her pussy.

Everyone laughed again.

Katherine said, "Good idea," and stuck Alan's thumb up hers.

As Kim walked out of the room, she said, "Do either of you want anything this time?"

Katherine yelled back, "I'll take my brother's wide, thick, meaty cock deep in my pussy, please! And I'm thirsty, too. But don't get me a drink - I know just where to get all the tangy sweet cum I could ever need! At least until they put it on the cafeteria menu." She switched positions and began to suck his penis back to life.

Eventually she had success and kept sucking it with even more enthusiasm.

But after some minutes, Alan said, "Hey! You know, you can do that anytime at home. Let's fuck some more."

"But I was to taste you this time."

"In that case, when I'm ready to shoot, you can suck me off."

"That's a hard sell, Mister," she giggled.

He sat up.

She sat up on all fours and poked her ass towards his face. "This time, let's try doggy-style! So many things I've been reading about that I can finally try out for real."

Alan thrust his hips forwards at the same time Katherine thrust her ass backward.

He was amazed at the difference between this and fucking a relatively motionless body. He decided right away that doggy-style was great.

They worked in perfect rhythm. Not only did her pussy muscles clench each time she thrust back at him, but his own posture made it possible to thrust with less exertion, which meant that he would last even longer.

Then there was the feel of her ass, as it pushed back against his hips. It was so soft, smooth, and warm that he couldn't help but to grab hold of her by both hips and luxuriate in the feeling of her skin even as he watched his penis disappear and reappear. Each time he pulled out of his sister's moist pussy, her inner lips seemed to drag along with his shaft, like they were still joined even when he pulled out.

Alan decided, Doggy-style is definitely most excellent. I could do this for days! But the best thing of all is that I think I'm reaching a lot deeper this way.

Sure enough, Alan kept his promise to let Katherine swallow his load even though he would have enjoyed filling her with his cum again. When he pulled out after many minutes of doggy-style fucking, she was right there to drink it up his soaring ropes.

When they were done, he pointed out, "You know, I'm fairly amazed that you didn't mind that my penis was covered with your own pussy juices."

"Brother you're so cute but so dumb. I'm your fuck toy now. I'll try anything, just so long as it doesn't involve another guy or guys. That's where I draw my limit."

"As if I'd ever want to share you. Ha! I can tell you now that ain't ever gonna happen."

CHAPTER 4

After their third time, they were both so tired that they instantly fell asleep.

Half an hour later, Kim had to come in and wake them up.

"Sleepyheads," she said and she shook them, "you're missing out on your very limited fuck time. You only have another half-hour before you need to take a shower and get cleaned up. S Club meetings can only last so long, even fake ones, and my mom will be getting home soon."

"Oh, Mom!" they both said in whining voices at the same time, because it was the kind of thing they would have joke around with at home.

Alan decided to run with the idea and pleaded, "Can't we fuck just a little bit longer, Mom? Pleeeeeasse?"

Kim stood naked above them, playing the role of a stern and tut-tutting mother. She folded her arms under her medium-sized tits and glared disapprovingly. "I'm sorry. I don't go for all this sibling fucking stuff. You two need to get back to your Service Club meeting." The sight was almost comical because her pussy dripped with her own juices as a visual betrayal of just how aroused she was.

Katherine joked, "But Service Club is all about service. Alan hasn't serviced me nearly enough yet!" She rubbed Alan's now-flaccid penis suggestively and imagined that her true mother, Susan, was the one standing in front of her. Such a racy and erotic thought did wonders for her own libido. She very much wanted her mother to watch. She had visions of Susan crying, "It's so improper!" even as she looked down on her children and frigged herself frantically as they fucked before her eyes.

"I'm sorry, kids," said Kim, "you two are only allowed to fuck each other six times a day. Those are the rules!"

Katherine then said to Kim as a way of explanation, "We haven't really talked about it with each other much, but I think it's safe to say that both Alan and I have fantasies about fucking our very fuckable mother, Susan."

That statement came as quite a surprise to Alan - he had no idea Katherine felt that way towards Susan. But now that he thought about it he realized he shouldn't have been too surprised. For one, Katherine was starting to get into other women, and for two, Susan was such perfect centerfold material that any female with any bisexual or lesbian tendencies whatsoever would lust after her. He didn't let the surprise distract him for too long, however, and continued to slowly push his meat into her from behind.

"Now there's a fantasy I can get into," said Kim as she absent-mindedly grabbed one of her own nipples and gently twisted it. "I've seen her at some school functions. I don't think anyone failed to notice her. How can you, she's like a giantess. She's like six feet tall, and not even skinny. And she's is so stacked! With the way she looks, it seems bizarre that she's just a housewife. I'm surprised she hasn't been kidnapped by a rich Arab sheik or something, to add to his collection."

Alan naughtily suggested as he ran a hand over his sister's left breast, "Well, if the Arab sheik isn't going to do it, maybe we should kidnap her, and make her OUR sex slave." Thinking about his mother made him think about tits, so he played with Katherine's.

Katherine added with a devilish smile, "Imagine her all tied up and yelling, 'Help me! Help me get fucked by your big cock, Son!'" She bucked up against his thrusting hips and added, "Just like you're doing to me now, Big ICBM Brother."

"ICBM?"

"Intercontinental Ballistic Missile." She giggled as she suggested, "Or maybe Inter-cunt-inental Ball-slapping Muffin-stuffer. I'm not sure."

Alan laughed. "But you know, about Mom, it's like you read my mind." He thrust himself into his sister's pussy forcefully some more. "How did you know I've been having fantasies about her?"

"Bro, sometimes you're so thick, and I'm not talking about your dick for once. If you weren't having fantasies about her until recently, then that made you the only one in town. It's like we've got Jayne Mansfield for our mom." She wanted to talk about what she knew regarding Susan's "help" with Alan's daily target, but she decided to wait until she knew Kim better before mentioning that in front of her.

"I guess I am a bit slow at times, Sis," he huffed and puffed. "Hey, why'd you pick Jayne Mansfield of all people?"

"I was trying to think of a famous actress with really, really big tits." She reached her hand up to her own tits. Diving between Alan's mauling hands, she tweaked her own nipples. A shiver went down her spine, which caused her body to shudder some and made her pussy throb even as Alan continued to plow her slowly and deeply.

"Oh. Good point. Anyways, of course I'd never do anything with her, since she's too nice, but imagine her coming to pick us up one day, and finding the three of us in a three-way. And then instead of getting mad, she rips off her clothes and joins in! I could imagine that actually happening!"

Then he remembered Kim there and felt obliged to belatedly add, "Of course these are just fantasies - I would never really think these thoughts of actually doing anything..."

Kim interrupted, "You two are getting me so hot again! How about we trade moms? Mine's a dear, but she's really let her body go to pot. Anyways, do you mind if I watch this time? I mean, since I kinda of am already."

"Sweet Little Sis, you mind?" said Alan, "It's fine with me."

"No prob, Big Hunky Brother. Pull up a chair, Kim, and imagine him pounding into to you on Monday."

Kim smiled broadly. "I think you just might convert me from lesbianism. But then Katherine is bound to convert me back all over again."

All three fucked and fingered each other and themselves for what seemed like an endless amount of time.

Alan worked on his fourth ejaculation. It seemed like he could stay hard forever as he lazily fucked his sister on the bed. The powerful scent of sex in the air grew even thicker with each passing moment.

Kim sat in her chair and worked on her own orgasms. Or at least she tried to sit in her chair. Sometimes she would get so excited that she'd stand up and be practically over them next to the bed while she furiously masturbated herself.

Alan was half-convinced that she would end up in bed with them, and didn't exactly mind the prospect.

However, she restrained herself. She knew that Alan was too nice to turn her away if she wanted to join them, but also that this needed to mainly be Alan and Katherine's special time with each other.

She grew more vocal as the afternoon went on and acted more and more like the cheerleader she was.

"Come on, Alan! Fuck your sister's pussy!" Kim cried while she frigged herself. "Show her how good you are, what a good brother you are. Slip it in and fuck her hard! Fuck her deep! Take your big bone and ram it into her. Plant your cock in her pussy!"

"That's what I'm doing already!" Alan cried out in amused frustration. He and his sister had moved back into the doggy-style position so that he could hammer into her more aggressively.

"Well keep doing it!" Kim yelled back. "Give her the fucking of her life! Fuck her tight, steamy pussy with your monster boner! Stick that bone! You're her brother - fuck her like you mean it!"

Kim liked to point out every few sentences how the two of them were brother and sister, as if they didn't know that fact already. But that encouragement helped keep everyone steamy hot.

At one point, Alan's energy flagged, and he had to take a breather.

Kim though, was ready to help. "Hey, I am a cheerleader after all. I think you two could use some inspiration." She disappeared for a minute and then came back with her pom-poms. Still naked, she started jumping around, shaking the pom-poms. She made up an improvised cheer:

"Fuck her hard
Fuck her deep
Make her cum
And make her weep!"

Alan and Katherine burst into laughter. Katherine in particular got the "sillies" - she just couldn't stop laughing. Kim's presence was most definitely appreciated.

The whole time Kim had been in the next room, she imagined that it was her instead of Katherine getting fucked. She continued to think along these lines: Katherine is so fucking lucky! Imagine having Alan as a brother! And then Susan as a mother! Fuck! Insane! I never knew I could get off on incest until these two came along. Hell, I never seriously even though about sex with a man. Now I'm soooo jealous. Fuuuuuccckkk! Oh God! Fuck each other! Ah! Yeah! Fuck me!

Katherine began to have little orgasms until finally it all merged into one massive orgasm for her. Just as she began to wildly buck under Alan, he shot his hot seed deep into her vagina.

Kim, too, came with them and staggered back into her chair.

Eventually they all shook out of their reverie.

Kim looked around and her eyes fell onto the clock. "It's been more than thirty minutes!" she yelled in sudden agitation. "We're running late. And how am I going to get these sheets cleaned up in time? I wasn't expecting a lake of cum. Shit! I guess I'll have to start the washing machine right now."

"Should we shower together?" Katherine asked her brother in a sexy voice. They dripped with sweat and cum.

He replied, "That would be another amazing first, but I'm totally spent. I don't think I'd be any fun. I have no idea how I'm going to get it up for nurse Akami tomorrow."

"What's that all about?" asked Kim, very curiously.

Alan realized he shouldn't have said that, and vaguely answered, "That's a secret we'll probably tell you later. We'll have to decide that. It's the story about how this sexual stuff all began. In any case, we don't have any time for stories now. Sister, why don't you and Kim take a shower together? You women can keep going long after us guys are all worn out."

"I don't know about that," said Katherine. She got up, but she obviously had trouble just standing, and leaned against the wall. "You fucked me so hard, I don't know if I can walk. Kim, you'll just have to help me tend my wounds in the shower."

"With pleasure!" She threw her pom-poms over her shoulder, glad to forget them when faced with such a tasty proposition. She wondered what it would be like to suck Alan's cum out of Katherine's pussy, if there was enough left.

The showers were quick, since Alan and Katherine were exhausted, sore, and in a hurry.

Kim did help "tend Katherine's wounds" though, and it did turn out there was some cum left to suck out. She was happy to do it.

Everyone got dressed.

Alan and Katherine both kissed Kim good-bye one after another just inside the front door for many minutes. The three of them eventually moved into a group hug and grope.

Private parts began to get uncovered again as the kissing and fondling intensified. But Kim finally said, "My mom is going to be here any minute. Let's save something for next time."

The two Plummer siblings finally and reluctantly disengaged after they profusely thanked Kim for the use of her house and her great hospitality.

Alan literally had to hold Katherine up as she walked to the car, she was so wobbly and her pussy was so sore from her first fucking.

As Alan took the wheel of the car, he looked at Katherine, and said very seriously, "Any regrets?"

"No. None. That was a dream come true. Fuck social convention. Together you and I can overcome everything. What about you?"

"I feel the same. No regrets. I feel like I should be feeling way guilty, but how could anything that feels that good be bad? That was awesome. Thank you, Sis. Thanks for encouraging this. ... We're a team. We'll stick together and deal with whatever may come."

They held hands and connected deeply as they stared into each other's eyes. It was the most romantic moment either of them had experienced.

Katherine thought, My fuck toy fantasy is a total rush, but this is even better! What I wouldn't give to be his wife and share moments like this forever and ever. It almost makes me sad that the one thing I most want I'll never get. But this is no day for sadness.

And so the most mind-blowing sexual experience of both Katherine and Alan so far in their short lives came to an end. Little did they realize that it was just the beginning of many, even greater pleasures.

CHAPTER 5

By the time the two of them got home, it was already past six.

Dinner would be ready in less than an hour, but Alan went back to his room and immediately fell fast asleep. He never thought a person could feel so utterly exhausted.

Katherine did the same. She tried to walk around as little as possible, and when she did it looked like she'd just ridden a horse all day, which wasn't too far off, metaphorically speaking.

They tried to rouse themselves for dinner. They were forced to make up stories about their fake club's first meeting to answer their parents' questions.

Alan was careful to continue acting tortured by his stimulation obligations in front of his mother. It was easy to do, since he was in a sort of agony already from sexual exhaustion. He didn't realize that Suzanne had recently told Susan that he wasn't having such trouble getting around lately, but it didn't really matter. Anything that reminded Susan of his erections served his purpose.

After dinner, Susan asked Alan to wash the dishes with her so she could have a moment alone with him.

Ron watched TV in the living room, totally oblivious.

Alan couldn't help but notice that she was wearing only a towel. It had occurred to him that in recent days she seemed to frequently come and go from taking a shower. It didn't take a rocket scientist to figure out what this was about: that allowed her to wear nothing more than a towel to titillate him, but at the same time her husband wouldn't think anything was amiss in the extremely rare chance that he could be torn from the TV.

She could even partially drop or readjust the towel, but so far she hadn't done that. She was still afraid to take things back to how they were before Ron arrived.

Susan asked Alan in deliberately vague terms, "Tiger, how are things going with your problem?"

Alan put on another extremely pained expression, and said, "I'm hanging in there, but it's hard. So hard." He deliberately used the word "hard" instead of something like "difficult" and really emphasized it so his mother would visually imagine his engorged penis.

Her eyes opened wide, and he knew the little trick worked. It helped that she didn't have to expend much mental effort to imagine his hardness: his penis strained the fabric of his shorts like it fought to get out.

"Hang in there," she said reassuringly. "It's just another week." That was a vague reference to when Ron would finally fly back to Asia. Her voice sounded bland, but her eyes were glued to his crotch. She thought, Oh my. Just look at that thing! If he adjusts his shorts maybe it'll poke right out the bottom. Do it, Tiger! Let me see all of you!

"I know, Mom, I know. Seven days. I can't last that long!"

Susan patted his head reassuringly and said mildly, "Don't worry, it'll be all right."

But her thoughts weren't mild at all. It would be even better if I let this towel drop. Then Alan would see me in the buff and his thing would burst right through his shorts! I'd be forced to suck it off before Ron saw how obscenely his woody stood out. Isn't that the kind of help I'm supposed to give?

Alan said with genuinely, "Thanks, Mom. Your support gives me strength."

"Son, you can do it. Be strong." Maybe if I let this towel fall, that could help you. Or you could really be a man, and grab it off. You know you want to! Don't be so shy. Be strong!

Her hand drifted to where the towel was tucked in, over her huge rack. She thought, If only Ron wasn't home, I'd drop it for sure...

"Mom, you're the best. I love you."

"I love you, too," she answered, with a benign smile. But her inner voice practically screamed now, and it was all she could do not to gawk at his crotch ever more blatantly. Her hand nervously grabbed the towel and she felt a nearly overwhelming desire to pull it open. If you love me so much, Tiger, rip this towel off! Take it off and ravage me! I don't care if my husband IS in the other room! Show your love and take me! Do me right here!

Suddenly Susan turned around and rushed out of the room. She fell onto her bed in her own room and quietly sobbed. Her mind was filled with visions of burning in hell. She cursed herself for her lack of control.

Alan was oblivious to his mother's inner torment, because on the outside she'd acted the same as she always did, except for a slightly trembling lip and a hand which clutched the towel far too tightly. He hadn't been looking her in the eye (as he was too fixated on her towel) so he didn't notice her gawking. He felt a twinge of guilt at lying to her just after having sex with his sister, but not nearly as guilty as he would have expected himself to feel.

As he headed towards the living room to watch TV with his father, he thought, How could my mom really criticize me or blame me for doing anything with Sis, when she's sucked my cock so enthusiastically? Why should I feel guilt?

Susan and Ron went out with Suzanne and her husband Eric to some social function not long afterwards.

Alan and Katherine were left alone, but both were happy just to vegetate, especially since they had their own rule only to fuck at Kim's house so they wouldn't be caught, at least for the time being. They were both so emotionally and physically wiped out that neither had any hope of getting any homework done that evening, even though Alan had a big test the next day.

CHAPTER 6

The two siblings were nowhere near ready for more sexual play when Amy came over about an hour later.

"Hey Alan, hey Katherine," Amy said to them as they lay flopped in the living room and watched TV. "It's just the three of us at home, right?"

"Right," said Alan. He thought, Uh-oh. Here comes something else.

"Goody. I'm still hoping you'll give me that homework help, but I'm also really worried about my pussy. Isn't it overdue for another shaving? Can you guys please help me out? Pleeeasse?!"

Alan turned around and finally took a look at Amy. He was incredibly turned on by what she wore. Once she'd walked in and found out the Plummer parents were gone, she took off her T-shirt and unbuttoned her blue jean cut off shorts. All she had under the shirt was an oversized top that was dark blue on one side and white on the other.

Alan realized that Amy had started to learn how to show herself off. Her top was sexy enough the last time she'd worn it, but now she'd arranged it so both nipples sometimes partly popped out. He wondered if she'd stretched the material or something so the top could hang off of her even more loosely.

Her shorts were slung so low that Alan was amazed that they somehow managed to hang on to her wide hips at all. With her shorts unbuttoned, nearly all of her pussy hair would have been exposed to prying eyes if she still had any hair down there.

But Alan was completely worn out. He thought, Why does Amy have to dress like this just after I've been fucked nearly to death? It's such a shame to not fully appreciate her sexiness.

"Oh God, can you handle this, Sis? I don't think I can even get up out of this couch, much less get up other ways." Yet even as Alan said this, he felt twitches of life in his penis, thanks to Amy's slutty clothing.

His sister replied, "Talk about being unable to walk - look at me! And do you remember what happened to me in cheerleading practice, on top of that? I'm even more wiped out than you are!"

"Yeah, wasn't cheerleading practice fun?" said an energetic Amy enthusiastically. "You want to work some more on the leakage problem?"

"Ugggghh!" both siblings sighed.

Amy looked puzzled.

"I'll take it," said Alan finally. "I won't enjoy it, much, but I gotta build up my stamina. It's all part of building up my energy, I guess."

But he continued to lie there, as if he waited for his body's energy to charge some more first. He commented lightheartedly, "Boy, Amy, looks like you're really having some trouble keeping your clothes on these days."

"Oh goody!" she squealed. "You noticed! I love dressing up all sexily like this. It's almost as much fun as being naked. Aren't clothes just the biggest bother?"

That roused Alan a bit. Partly to stall having to move, he asked Amy, "You're really fine with nakedness, aren't you?"

"Gosh yeah! Totally! What's the point of clothes, anyways? Don't you think they're kind of silly? Like guys wearing ties. That's just silly! Okay, if it's cold, clothes are good, I guess. But on a nice warm day, why get all covered up? I would have walked over from next door without any clothes at all except for everyone getting so upset when I do something like that. Mom and Dad never let me be naked, like, EVER! And you should see Brad's face when he finds me watching TV without any clothes sometimes."

"I'll bet," Alan commented. He could well imagine Brad's consternation.

Amy continued, "Wouldn't it be great if everyone was naked all day long? Except for the really ugly people." She giggled. "But imagine if everyone was beautiful, and we were all naked, and it was sunny and green and we all lived in nature. Wouldn't that be, like, the super bestest of all? Kind of like Adam and Eve."

Katherine pointed out, with a bit of a leading question, "But if everyone is naked and good looking, then don't you think all the people would get lusty and start having sex all the time?"

Amy grabbed one of her tits and clutched it idly as she thought. She appeared to contemplate taking her top off. But then she answered, "Yeah, but would that be a problem? I mean, isn't that how it was in the Bible? Weren't Adam and Eve, like, doing it to each other all over Eden? And when they had kids, weren't they doing it with their parents and each other? Sisters rutting with brothers and sons doing it with their mothers? Otherwise, who populated the Earth? And I thought that was the utopia we all want to go back to."

Alan had visions first of himself fucking his sister. They were incredibly vivid images from just a short time before. He momentarily wondered if Amy knew more than she let on about what they did, by talking about sibling sex for the first time ever. Then he had images of Amy running around a perfect garden, bent over some big rock and taken from behind by man after man. Everywhere she would wander in the garden, men would grab her and fuck the living shit out of her, but she would just smile blissfully and say, "Wow!"

That roused him enough to motivate him to stand up. He went with Amy to the bathroom. He felt glad to know at least that Amy wouldn't hate him and Katherine if she found out what they were doing to each other.

"Did I come at a bad time?" Amy asked, as she closed the bathroom door behind the both of them and shed her clothes with a boundless enthusiasm. "Both of you seem all poopy."

"Kind of," said Alan, "but that's okay. We're happy to help you out, anytime."

Amy sat on the edge of the bathtub and faced away from it, as she did before.

Alan was so exhausted he didn't even bother to take his clothes off.

"No, you seem really tired," said a visibly worried Amy. "Are you sure you want to do this? We can do it tomorrow instead."

"No, well actually..." A naughty thought went across Alan's bleary brain. "The truth is, I have a problem. Can you keep another secret? A super secret?"

"Of course," said Amy, happy to be gaining his trust. "Haven't I been good with secrets?"

"Yes, I guess you have. Anyway, the problem is with my penis. You see, my penis is all tired out. And when my penis is tired, that means I'm tired, too."

"Oh gosh! That sounds horrible!" Amy gushed. "Is there anything I can do to help?"

"Well, actually there is. If you could get my penis excited again, then I could get a new rush of energy and would have no trouble shaving your pussy."

"Oh goody! I'd love to help! And it would only be fair, since you've been helping me so much. But... everybody tells me that penises are bad. Especially penises and pussies put together. Like what almost happened with me and Jack Johnson last year. Aren't those thingies bad? My parents told me never to touch one."

"No, don't be silly! A penis isn't bad. Weren't we telling you the other day about all the wonderful things a penis can do, like how it can cure the hiccups and all that? It's just that certain men are bad, and they do bad things with their penises. So your parents gave you a blanket warning to make sure you'd be safe. It's like when your parents told you not to talk to strangers when you were a kid. It's not like all strangers are bad, but your parents didn't know if you could tell the good ones from the bad ones."

"Oh, I get it. Well, I trust you completely. If you say so, then I'm sure it's fine. So what do you want me to do?"

"Do you mind if I take it out?" asked Alan, ready with his hands on the band of his shorts.

"No, of course not. I wanna see it!"

Alan wearily took his shorts and underwear off and lay down on the floor. The weather was still always hot and everyone wore nothing but shorts, it seemed. His flaccid penis hung lifelessly between his legs for Amy to see. Even Amy's naked body and all their talking weren't enough to revive it.

"Oh no!" said Amy. "It looks sad. Not at all like the ones I've seen in the movies and stuff."

"Yes, very sad," Alan agreed. "If you could rub it with your fingers maybe you could invigorate it and make it happy again. Then it would stick out proudly like a flag pole."

"I don't know... Are you sure this is okay? I've never really touched a guy's thingy before, except when I was trying to push Jack away."

"Amy, let me tell you another secret. Do you remember a while back when you walked in on us watching TV, and you saw your mother sitting with her pussy wide open and pointed so I could see it?"

"Sure. That's when you first let me in on a secret."

"Well, the reason she was showing me her pussy was because she also knows about how my penis, my thingy, is usually sad. She was trying to excite me to help it get back to life. She touches and rubs it a lot to help, and even Katherine and Susan do sometimes."

"Oh really? You've been getting them to help you and you never asked for my help? I'm hurt." Amy pouted. "I'm happy to help in any way. What do I have to do?"

"Like I said, if you could start rubbing it."

Amy took his penis into her hands. It already began to show the first signs of a revival, even before she touched it.

"Gosh, it feels weird. Kind of like a limp vegetable or something."

"Yeah, it's kind of like that now. Just gently rub it with your hands some and you'll see it grows and gets better."

Amy began rubbing it.

"That's good," said Alan. He noticed Amy seemed to have a natural knack for rubbing penises, because from the very start her touch felt great. But to help her improve, he gave her advice on the best spots to rub and told her to focus on the sensitive spot just under the head.

It quickly grew to full size in her hands. She asked, "Is that as big as it gets?"

"Yes, pretty much."

"Gosh, it's so big! Bigger than the ones I've seen in pictures and stuff."

"It gets to be almost eight inches, which they say is pretty good, but it won't stay that way for long today. It's soooo tired. I think we need something else. You know, boys have some favorite body parts. They love pussies, butts and boobies."

"I know that, silly! Guys are always trying to touch my butt and my boobies, but my friends and parents say I'm not allowed to touch them back!"

"Well, generally that's a very good rule. But with me it's different, like I explained before. Maybe if I played with your boobies, it would help my penis grow a little bit more." She thrust her chest out. "M'kay! Should I lean in towards you, then?"

"Yeah. That's a good idea." Alan reached out and began to fondle her lovely boobs. They weren't gigantic like his mother's or her mother's, but were still damn big, and perfectly shaped for their size. They rode high on her chest and stuck out proudly, even when she wasn't deliberately thrusting forward.

"Oh, look!" said Amy excitedly. "I think your thingy is growing even more! It's swelling in my hand. I'm so glad I could help. And it feels good to help, too. Especially when you touch my nipples like that."

Alan was already fully erect, but he didn't want to diminish her enthusiasm. Certainly he grew hornier with each passing minute, more because of the way that Amy had shown herself to be submissive to his every desire than the actual physical contact between them.

"Mmmm. Yeah," she cooed as Alan put more vigor into exploring her chest. "Feels so good. You can touch my boobies any time you want. You don't even have to ask - just grab 'em. Don't worry if I'm wearing any clothes - just take 'em off if you want to."

Alan thought about that. Man, life is good! Amy's boobs are so big and soft, too! What luck to have a next door neighbor like her. How is it everything's falling my way all of a sudden? I wonder if Aunt Suzy put her up to this? Nah, Suzanne is really protective of her.

As she returned her attention to his penis, she asked, "Now what? Do I keep rubbing?"

"Yes, you should keep rubbing or else it may go down again." In actual fact, Alan realized that his dishonest story had come true. His body's energy WAS reviving. Maybe I shouldn't doubt the doctor's diagnosis after all, he thought.

As she continued to rub, he began to feel that he had the energy to give Amy a good, solid fuck. He figured, If I asked her to fuck, she'd probably just say, "M'kay!" Only hours ago I was a virgin, and now I could fuck a second girl on the very same day as my sister! How amazing is that?

But it seems the conditions aren't right. For one thing, no doubt I'd catch hell from both Susan and Suzanne. Plus, I don't think my penis could handle anything more today. At the very least, I wouldn't enjoy it as much as I should. If I do it with Amy, I should make it a special experience for the both of us, just like it was with Katherine.

He was drawing dangerously close to a climax. "That's good, Amy, you can stop now." He pulled his hands away from her chest.

"Are you sure?" she asked, still rubbing. "I really don't mind rubbing at all, and I think what you've been doing with your hands is great."

"No, really, take your hands off NOW, please!"

"M'kay," and she did so, feeling slightly hurt. "Geez."

Alan explained, "Sorry for getting anxious there. It's just that, well, we really have to hurry things up so we can shave your pussy before everyone gets back home."

"That's okay; I'm kind of new at this. I'm sure I screw things up. But that was fun! If you want to rub my boobies, or have me rub your thingy anytime, just let me know!"

"I'll do that." He thought, Jesus, she's like a completely pliable sex object! She'll do anything I say and not even wonder why. Talk about a real fuck toy! That's such a turn on!

He said, "All right, let's hurry up with your shaving. Today we have to hurry. Some other day we can do a more thorough job. Spread your legs really wide."

He stood up and got out the shaving cream and razor. His penis continued to happily stand at attention.

"Your thingy looks funny bouncing around while you walk," Amy giggled.

Alan was too tired to think of a response. "Hold still, and close your eyes," was all he could say. He covered her pussy and began to shave it. Then he remembered the whole "checking for bumps" story. He felt obligated to follow through with that.

"If you don't mind, I'm going to starting checking for bumps again."

"Mind? I just loooooove it when you check for bumps," mumbled Amy out of the corners of her mouth in an attempt not to even move her lips.

Alan could barely understand her words; she took his command not to move very literally. He thrust his fingers in an out of her pussy. He gave her a vigorous finger-fuck and didn't even make a pretense to "check for bumps" on the interior walls of her vagina.

Then Alan finished shaving her as fast as any professional barber would have, especially since it wasn't a big job like the first time was when she had a full bush. "Amy, you can open your eyes now and you don't have to worry about sitting still anymore."

The shaving duty over, he continued to "check for bumps" for many more long minutes. Meanwhile, they talked.

"Gosh, I just totally love it when you check for bumps," she said again. "It reminds me a lot of something that happened to me earlier today."

"You mean with you and Heather at cheerleader practice?"

"You know about that?" said a very surprised Amy. "I thought that was supposed to be a special secret."

"It is, but anything that Katherine knows I'm likely to know, and vice versa. Like I'll tell her later how you helped me out just now. And her secrets are always safe with me, so no worries."

"Oh. M'kay."

"Actually, Amy, checking for bumps is a lot like masturbating. Sorry to hear about your leaking fluids problem, but Katherine and I will be glad to help you figure that out later, on some other day."

"Really? Wow! You two are the best. Always helping me out!"

"That's what friends are for." A thought occurred to Alan: in his book reading he'd done recently to become a better lover, he'd learned about a woman's G-spot and how to find it. He decided to put the knowledge to use. So he said, "You know, Amy, there's one area in particular where a lot of bumps accumulate. Let me check there."

He searched the inner wall above her slit, and found a rougher area easily enough. He focused his attentions there.

After a few seconds, Amy said, "Oh no, I think I have to go pee! But I don't want you to stop."

"Just fight that feeling. I think it'll pass. It's just that I think I've found one of these elusive bumps." He kept rubbing, and from the changing look on Amy's face, knew he was onto something. Her G-spot slowly expanded, until there was no doubt it was quite a big "bump."

"You feel that Amy? What my fingers are going over? That's one of these bumps I've been warning you about. Now you can see why shaving is so dangerous and why we have to help you so much."

"Are you saying these are supposed to be bad? But it feels so good when you touch them! Please don't stop! I love my bumps!" She trembled and shook from another orgasm.

Alan waited until she came down from her erotic high. Then he said, "We can talk more about these bumps later. Now that we've found one, we'll have to redouble our efforts to find the others. But we really should stop here. I'm getting tired again." He pulled his fingers out of her pussy.

She was very disappointed by that. "Oh no! Here, play with my boobies some more, and let me hold your thingy."

"I appreciate the thought, but I really have got to get going. Remember that this is all another super secret. And don't let anyone else touch you like how Katherine and I have been touching you, unless one of us says so, like what happened with Katherine and you and Heather. You can't trust anyone else, and you don't want to have what almost happened with Jack Johnson happen again."

"Dear me, no. You two are the bestest pals! You guys would never take advantage of me. I don't trust anybody else. You're like, super trusty."

Alan pulled up his pants and watched Amy put her clothes back on. "Why don't you go find Katherine and tell her everything we've just done. She'd like to know how it's going with the shaving of your pussy, and like I said, we don't keep secrets between us. I'm so tired I think I'm just gonna go lie in my room."

CHAPTER 7

Alan lay down on his bed and began to drift off to sleep, even though he knew it was still before nine o'clock.

He woke up when he heard his sister enter his room. "Someone has been a very naughty boy," he heard her say to him. He opened his eyes and saw her dressed in all her clothes, ready in case the parents returned.

"Headline: pot calls kettle black," Alan tried to joke. He asked of Amy, "Is she gone?"

"Of course." She grabbed a pillow and lay down on the floor near his bed.

"You know," he went on, "between you and me, her supposed protectors, we're doing a pretty lousy job of protecting her. In fact, it seems like we're slowly turning her into a sex addict."

Katherine didn't seem perturbed about it. "Ah well, what can you do."

"Very funny," said Alan. "You know I feel pretty bad for playing with her like a toy, but I feel even more turned on, for doing it again. She's just so damn fuckable! Talk about a fuck toy! She's so ready and willing. You know, I think that if I told her that my penis was a paintbrush and I had to use it to draw a painting on the back of her vagina, I half expect she'd believe it!"

They both laughed.

"Yeah, I agree," nodded Katherine. "But keep in mind, buster, who your number one fuck toy is! No need to go all the way to Amy next door when my bedroom is only ten feet away."

"Don't worry, she can't compete with you 'cos you're my sister and my best friend and I love you. But admit it: you want her, too. You're gonna turn into a total lesbian if you don't watch out!" he playfully chided.

"Bah! When I could have your cock instead? No thanks, Big Penis-pistol Brother. A pussy is just something to bide my time with, since you seem to be so busy with so many women. I gotta admit, I'm jealous of Suzanne and Susan, not to mention your appointment with Akami tomorrow. I'll bet the clothes will be flying off pretty fast there!"

"I bet you're right about that. And I'm totally into you, Katherine. We're brother and sister and that'll never change, and I hope us being physical and fucking our brains out will never change, too. But you have to admit our two favorite moms are pretty incredible. I mean, now that you're doing it with girls, wouldn't you do either of them, or both, in a heartbeat? You have to figure I would as well."

"Yeah, okay, they're pretty fuckable. They're like porn stars or centerfolds. But that's the problem. I figure I can't compete with that. Their pretty faces, wide hips, long, muscular legs... And of course, each of their boobs could be an entire Macy's parade float for crying out loud. How can I compete?"

"Don't worry; your boobs are plenty big enough to keep me happy. And you're still growing, not to mention what good shape you're in too. You're already bigger in the chest than Mom was when she was your age, she tells us. If you keep that up, you're going to need a forklift in front of you holding them up whenever you walk around!"

"You say the nicest things, Big Horse-hung Brother! Do you really think my boobs are nice? They feel kind of inadequate to me." She sat up and took her shirt off so he could have a good look at them.

"Are you crazy, Sis? They're amazing. You sound like a multimillionaire who complains about being poor 'cos he's not a billionaire. Virtually any girl your age would kill for boobs like yours. And they make me very happy, so please don't keep putting yourself down. You're completely gorgeous. You have such a perfect body! I mean, geez, forget about your great tits for a second. What about your ass? Or your legs? Your legs really do go on forever. I must have been blind not to want to fuck you years ago."  

Alan wasn't just saying that to make her feel better either – he honestly couldn't understand how she could have a complex about her boob size or worry about her looks in general. He added, "But could you please put your shirt back on? We're supposed to be on our best behavior at home, right?"

"I'm just taking it off for a second so I can get your opinion of them. And if you put it that way, I guess I can stand to share you just a little. Like the tortoise and the hare, huh? But what about Amy? She makes me jealous, too. She's young, big-boobed, and growing. Her tits are bigger than mine, you know. And speaking of asses, she has a particularly fine ass, I'm sure you'll agree. It's big, but not at all flabby."

"Jealous? You mean when your fingers aren't deep inside her? Anyways, you and I can have fun with Amy physically, and she's really nice and a good friend, but she'll never have the emotional place in my heart you do. And boobs and asses and their sizes aren't everything, either. You know you're way more toned and fit than she is, for one thing. Also, I need a girlfriend for school, if only for social convention. What are people going to say: 'There goes Alan, the guy who never dated a girl in high school, and never dated a girl in his life?' But I only want to have a girlfriend who understands about you and me, and is willing to participate in it, even. I'm beginning to think Amy would fit the bill."

"I could live with that, on the outside," said Katherine. "As long as you treat me like your girlfriend at home. And we all know what your number one boyfriend responsibility is." She reached out to grab his penis.

He intercepted her hand and kept her at bay. He just didn't have the energy, plus there was the danger factor.

"Okay, fine. I'm tired too. But it's your job to keep me filled with that." Then she changed topics. "But also, what about Kim? Why don't you make her your girlfriend?"

He replied, "She may get her jollies with me - we'll see if that happens. But let's face it. At heart she prefers women. Besides, she's not really my type. Too young and immature."

"Physically immature," Katherine clarified for him. "I know what kind your type is: the kind with tits so big that they fall over forwards whenever they try to walk. Like two certain mothers I could name."

"All right, there's some truth to that. As if that makes me different from every other male in the universe. But don't worry." Alan comforted her with a warm hug. "I seriously love you just as much as either of them. After all, you're my sister, and there's a real thrill in making love to my sister that only you can satisfy. And by the time you've finished growing, Macy's will be calling you to see if you have two new entries for their parade, too. You're a knockout already, and you're still coming into your own. In thirty years I hope we'll still be fucking each other, while Suzanne and Susan sadly will already be senior citizens."

"Thanks!" Katherine said, somewhat relieved. "You're the best brother anyone could have. In any case, let's not go any further with Amy for a while, okay? I feel like I have enough competition in your fantasies, what, between Mom, Suzanne, Amy, Akami, Kim, Ms. Rhymer..."

"Hey, whoa, I've never even touched Ms. Rhymer!"

"Yeah, that's the only one of the bunch you can say that about, I noticed! And you seem to have a way with women nowadays. I'm sure she'll fall like a domino, if you're after her." She mocked Ms. Rhymer's voice, and asked pleadingly, "'Oh Alan, my young man, please let your teacher help you with your medical problem!'"

Alan laughed.

Katherine went on in her normal voice, "Anyways, I've told you I don't mind you doing other women, as long as you don't forget me. Especially since I seem to get a share of the action too, from time to time."

They both laughed at that.

Katherine continued in reference to Ms. Rhymer, "You've had the hots for teacher for two years already." She sang the Van Halen song: "You've got it bad, got it bad, got it bad, you're hot for teacher."

Alan rolled his eyes, but was secretly pleased at the whole teacher-romance concept. That song was frequently in his mind lately.

She continued, "If she had any sense, she should have been having you pound her through a wall with that jackhammer cock of yours, instead of giving you blue balls all this time. She has her nose in books instead of up your crotch."

"Why don't you tell that to her?" suggested Alan facetiously. "Anyway, I'm really beat. And I'm sure Mom and Father would love to hear their model kids talk like this."

Alan still lay on his bed with Katherine now back on the floor near him. He looked over the edge of his bed to see if she'd put her shirt back on yet, but instead of putting it back on, she'd taken her shorts off as well.

"Sister!" he whined. "That's not what I call putting your shirt back on."

She smiled naughtily. "I know, but my shorts were chafing me." She giggled.

"You and your chafing," he said with a sigh. "What am I going to do with you? You seem determined to get caught."

"I have a suggestion on what you can do with me, Big Studly Brother, but it's only going to make you more upset with me. You see, I have this hole that needs to be filled with a hot injection of thick man-meat."

"Katherine! Not at home, remember?"

"I locked the door to your room, you know, and these walls are practically sound proof. I'm not stupid."

"Nope," Alan said firmly. "You're certainly not, but I really have to put my foot down. And whatever happened to being all tired and sore, anyways?"

"I am sore. Soooo sore. But any time is the right time to fuck. I think the only cure for my sore pussy is some Big Thick Brother cock. It's like drinking some more alcohol to cure a hangover. Why not a little more sister-poking? When it comes to you, just imagine a little sign above my pussy: 'Open 24 hours a day.' Just like the corner Quickee Mart." They both giggled. "You sure you don't want to make a quick stop into your sister's pussy?"

She swirled around to face him, spread her legs, and opened her pussy lips wide with her fingers. "Calling all cock! Calling all cocks! Mayday! Mayday! All hands on dick!"

Alan laughed, but he also gave a look with his face that said no.

She sighed. "But if you insist on leaving me horny, can I at least take care of you?" She got up and cradled his penis in her hands. Despite his exhaustion, it had grown hard thanks to all the sex talk.

"We can't even do that while Ron is home. What if one of them walked in? As much as I'd love it, believe me. But a rule is a rule."

"But the door is locked!"

"Yeah, but it's a slippery slope."

She kidded as she ran her fingers up and down it, "I'll agree that it's slippery. Definitely slippery most of the time. I'm not so sure about the slope part though. A little bit crooked, maybe, but not much."

Alan swatted her hand away, in a playful yet effective manner. "One of us has to retain at least a shred of sanity and restraint, Sexy Little Sister." He smiled as he decided that if she always called him big brother with an adjective thrown in, he could reciprocate a bit more.

She smiled too. "Okay, tough guy. I'll go then. You're just leaving me wanting you even more badly, Big, Long, Hard, Throbbing, Sister-stuffing Brother. But remember that I'm serious about what I said about sharing. I don't mind setting you up with someone like Heather, if you're brave enough to handle her, since I know you wouldn't want her for a permanent girlfriend. Obviously her personality is a real turn off for you and she'd just be a momentary diversion that I could partake in. But someone like Christine, someone you really love who could take you away from me, that really worries me."

"Don't worry. As I keep telling you, Christine is just a friend now. And I know Heather looks great and is the talk of the town and all that, but I know I wouldn't like her or wanna get close to her. In fact, there's no woman in the world who will take my sole attention now that I have so many wonderful women all helping me out. I would be a fool to accept any situation where I couldn't fuck you constantly, Moist Little Sister. That's one thing you don't have to worry about at all."

"That makes me feel so much better. I wish I could be your girlfriend in school too, but I realize that ain't gonna happen."

"Yeah, that would be cool," Alan said wistfully. "But you never know. College maybe? We're not actually genetically brother and sister, so as long as nobody knows us from high school..."

"All right, don't get my hopes up already. There are always problems. Like, what if you're at college and Ron asks you, 'So Alan, who's your new girlfriend?' What could you say? 'Uh, actually it's someone you know...' Ain't gonna happen. Anyways, I'm out of here already, Big Pulsing Pounding But-not-ramming-his-sister-nearly-enough Brother."

Alan laughed. "Hey, if we get so into these naming games, we'll never finish our sentences. Not to mention, someone might overhear. What's more is that it hasn't even been one day since I rammed you, as you so poetically describe it. Have a little patience."

She huffed, but playfully. "Easy for you to say. That's like saying to a heroin addict, 'Hey, only 24 hours of cold turkey withdrawal. What's the big deal?' But I'm curious. How many times did you get off today?" She stood up and began to put her clothes back on.

"Let's see, if you don't count last night after midnight, which technically belongs to yesterday in my record keeping, then it was once this morning, twice at lunch, four times with you this afternoon and almost once with Amy. And my penis has cried surrender for the night. So, seven. I've done better. But in terms of quality vs. quantity, I don't think it'll ever be possible to beat today."

"Well now I've got something to aim for, don't I?" She winked. "Goodnight, sister-fucker. Thanks again for the great day!"

"Thank you, too! Goodnight, brother-fucker!" he said with deep contentment.  

She kissed him goodnight on the lips for several minutes. As she was still partially naked, she tried to lead to something more and got aggressive with her hands, but Alan and his sore penis wouldn't have it.

He barely had the will to push her away, and he pointed out, "You see what I mean about the slippery slope?"

As she made to leave, she made the comment, "Too bad I have to go, but once you start fucking Mom, she and I can take turns sleeping in your bed! Or we could all sleep together. Wouldn't you like that, Big Shove Your Huge Monster Sister Splitter Deep Into Me And Then Make Me Suck Your Hard Cock Over And Over Again All Night Long' Brother?"

Alan had no comment, but Katherine could tell from his facial expression that he would like that very much. He looked cute blushing.

Alan was surprised again at how little guilt plagued him over his incestuous thoughts and deeds.

Instead, he filled the void by saying, "Actually, Squeezy Little Sister, as much fun as we're having calling each other names, we're definitely getting carried away with that, and it's dangerous. So we can't do that, either. Not to mention, these names get me so hot that it really weakens my resolve. And it gives me too big of a head."

"Awww. But don't worry, I'll give you head. Would you like me to give you big head?" She moved back towards his crotch.

"Sis! Please. I said A big head. Emphasis on the A."

She pretended to be dumb. "OooOOOoooh. My bad." She giggled, then winked, and finally slipped out the door.

CHAPTER 8 (Friday, Oct. 25)

Alan was asleep within minutes, and had a good ten hours of rest that night. When he woke up, he felt like a million bucks, and so did his penis. His alarm woke him early. He got some black paint from the garage, and secretly repainted his sister's crotch in the shower before breakfast.

He thought, Man, I am so glad the bathroom door has a lock. Especially since Ron knocked on the door to see if the bathroom was free - that was a close one!

No way am I going to get caught again. But if I have to get caught, I'd rather get caught painting here than in the supply closet at school. I could always make up some excuse to Mom and Father about painting my sister, weird though it might look. After all, we're only painting. Plus, I'm getting pretty good at coming up with bullshit stories on the fly. Kim will just have to manage on her own 'cos I'm not going back in that supply room. Hopefully her paint job will hold since she didn't get fucked all afternoon like my sis.

Once Katherine left, Alan masturbated as he showered and relived what he and his sister had done the day before. He figured he was ready for anything Akami might dish out, and also fantasized about Ms. Rhymer throwing herself at him after school. But he made sure not to cum, sure that he'd have better chances later in the day.

After both Alan and Katherine left for school and Ron left for work (his vacation at home wasn't much of a vacation), Suzanne came over as usual and joined Susan for their daily exercise regimen.

Susan was proud of herself that she'd gone all of Thursday without any inappropriate touching of her son. However, her urges were inexorably building up. After everything that happened on Tuesday, Suzanne seemingly managed to bring every private conversation she had with Susan around to a discussion of Alan and his ever needy erection. She was so slick that Susan never realized how Suzanne was deliberately goading and tempting her at every turn.

This day, Susan burned off her sexual frustrations by attacking the exercise machines with unusual vigor. By the time they were all done, she felt like a limp noodle.

After Suzanne left, Susan went back to her bedroom and took a nap, something she hardly ever did. She slept and dreamed.

The dream started out as a replay of what had really happened that morning at breakfast. Ron was busy reading his usual Investor's Business Daily newspaper while Katherine and Alan gobbled down the big breakfasts Susan had prepared for them. Ever the dutiful housewife, she was constantly coming and going to the kitchen to serve everyone else's needs. It was a wonder she found time to eat her breakfast with them as well.

So this was exactly how it was in her dream, except that she was wearing an outrageously sexy and revealing nightgown. The gown was semi-transparent, not to mention open to the waist, but neither Alan nor Katherine found this in the least bit strange. Whether Ron would have been shocked was unknown because he was so absorbed in his newspaper that he wasn't paying any attention to the others.

She looked down and realized that most of both her breasts were hanging out of her robe, but it was cut in such a way that there was really nothing she could do about it.

Susan at first didn't even realize it was a dream and not reality, but things somehow seemed like they were supposed to be. She continued performing her usual morning rituals and duties in a bewildered daze.

Then when she brought Alan his usual bowl of Honey Nut Cheerios, he started to feel her up. Not surprisingly, his hands honed in on her E-cup sized rack.

She stood there blushing while he reached inside her nightgown and groped at her bare chest.

He said casually, as if he did this all the time around Ron, "Mom, I'm checking to make sure you're following the rules."

She whispered, "The rules?"

"Yes. The rules that state you're not allowed to wear a bra or panties. Ever." His cereal temporarily forgotten, he twisted and pulled on her nipples with both hands.

Susan's mouth hung wide open. If her heart hadn't been pounding hard before, it certainly was now. She stared with horror at Ron's newspaper, fully expecting that he'd heard what Alan had just said and would take the paper down. Then all hell would break loose. But the paper stayed up. The only sign there was someone alive on the other side of it was the sight of some fingertips holding up the paper and the sounds of a bagel being chewed.

She finally looked back down at Alan and whispered almost inaudibly, "Tiger, I think you have your answer already!"

Alan spoke back without making any effort at keeping his voice down. "True. At least about your tits. Let's check your pussy." One of his hands dropped down to the front of her crotch and the other reached around to her ass. Two of his fingers pushed into her slit, which was already moist and eager. All his fondling in front and back kept her gown wide open and her entire front side exposed. It was a near miracle her gown managed to cling to her shoulders and stay on (not that it covered much in any case).

Susan remembered Katherine was there and looked over at her. She seemed completely unperturbed by what was happening and just chomped away at her crunchy cereal. However, there was no newspaper blocking her view so she kept looking over at what Alan was doing.

Susan whispered to her, "Angel, what's happening here?! Don't you find what Alan's doing to me a bit... odd?!"

Katherine giggled. "Odd? Mom, you're the odd one today. Alan's just making his usual underwear check. He's checked me twice already this morning! See?" She was wearing a gown held closed by a sash, and without getting up she opened the sash and exposed herself from her neck to her knees. Sure enough, she was unencumbered by any underwear.

She leered at Alan. "Brother, you wanna check me again?" Like Alan, she wasn't trying to keep her voice down whatsoever. She added in a sultry purr, "With your special prober, perhaps?"

Alan winked at her. "Maybe later, Sis. Suzanne gave the prober a pretty good workout last night. Besides, I think I'm gonna be checking Mom for a while."

Katherine just grinned and went back to her cereal. She left her gown wide open.

Susan found all of these disturbing events to be terribly arousing. Her pussy was gushing thanks to Alan's continued fingering. She knew that if she didn't get him to stop soon, she'd cum and cum hard. She was certain the resulting scream would wake the dead and certainly have to clue Ron in.

So she said, "Alan, please! No! That's enough!"

He frowned. "Enough? Mom, I don't like your attitude. Blow me."

"What?! How DARE you talk to your mother that way!" Since the others weren't whispering, her voice was growing louder and louder too.

"Mom, I'm not going to warn you twice. Blow me now, or I'm going to have to take your over my knee and give you a good spanking." He looked like he was ready to do it.

Susan's mouth gaped like a fish. At first she rejected the idea of a blowjob out of hand. But she weighed her options and decided that if she had any chance of saving her marriage by miraculously keeping Ron oblivious, the blowjob was the lesser of two very horrible options. The loud ass slaps in a spanking would alert anyone who wasn't completely deaf to what was happening.

While she was making up her mind, Alan tugged on her gown and kept tugging until her gown was on the floor.

Susan immediately bent down to pick it up but before she could Katherine snatched it away. Susan then reached for it, but Katherine crumpled it into a ball and held it away like she was protecting the ball during a basketball game.

"Naughty, naughty, Mom," Katherine chided her. "You know the rules in this house. Cocksucking Alan is always done naked."

Susan was feeling frantic. There was a part of her that wanted to blow Alan so bad she could almost literally taste it, but a greater part of her was scared to death with Ron right there. Seeing that Alan was busy eating his cereal at the moment, she decided to try and slip away upstairs without anyone noticing.

However, she only took a couple of steps away from the breakfast table when she felt two femine hands on her butt.

It was Katherine standing behind her. She said, "Mom, now where do you think you're going?"

"Well, I thought I'd, er, powder my nose first."

Katherine laughed as she intimately caressed Susan's shapely rear. "That's a good one! If I didn't know better, I'd seriously think there's something wrong with you. Are you feeling okay? Is your stomach queasy again from swallowing too much sperm? Geez, Mom! Are you or are you not your son's sexual plaything?!"

Susan turned back towards Alan. She found herself hefting her breasts up and practically molesting her own chest, and she didn't know why. She looked at the big bulge in Alan's sh