The afternoon sun shone on the sidewalks and hedges of Ambleside Close, Albany, in Livingstone county, illuminating the windows and front doors of the detached houses which circled around the small patch of grass that added a touch of green to the grey tarmac and sidewalk Alison lay stretched out on her bed in just one of the bedrooms overlooking the parked SUVs and MPVs parked either by the sideways or in the drives. The television in her room was on, as always, broadcasting the image of a pneumatic teen warbling a pop song of undistinguished quality and even less depth. But saccharine soul was not where her mind was. Mom and Pop were away and Alison was wondering how in the circumstances she could best play.

Her slacks and pants were pulled down to her ankles and her tee-shirt pulled up over her small pale breasts, while one hand stroked a nipple and the fingers of the other gently massaged the small clitoris just growing in receptiveness in the smooth hairless crevices of her vagina. It felt so warm in there, she thought, as her fingers traced around the tight folds and probed into the tight confines of her slit. Her mind wandered with the rhythm of her fingers, while a squadron of young girls and boys gyrated and swivelled on the television screen with the passion of clockwork toys, and words of love, romance and passion coloured the over-produced beat of audio wallpaper. Occasionally, Alison's eyes caught a glimpse of the broad, hairless torsos of the boys as they shimmied and scissored to the candy-coated rhythm, feeling ever so much more passionate as she thought of the dicks hidden in the crotch of their tight denims.

Normally, she'd have been more circumspect, but, hey fuck! it was the summer holidays and the parents were out at some reunion in Fordham county and they weren't due back until real late. If you can't pull down your pants and probe the pussy when you've got the place virtually to yourself, well, when can you? After all, a girl's got to learn the best way she can. And anyway, soon there'd be college and exams and careers and then there'd be no chance.

"Hey, sis! You ain't seen my Bon Jovi album, have you?" suddenly shouted Alan, pushing open the door and not at first recognising or understanding what he was seeing. His younger sister looked up startled. She'd thought Alan had gone out or something. What was he doing there?

And then belatedly, it occurred to her what her older brother was staring at with his mouth wide open and a can of Dr Pepper in one hand. She was still stroking her pussy and the lumps of her breast, as wide-eyed and open-mouthed, Alan's acned face framed itself in the hallway door.

"What the fuck are you doing?" He gasped.

Alison was enjoying the impression she was making on her brother. She'd never really thought of him as a boy as such, any more than he'd probably ever thought of her as a girl, but it occurred to her that like the men whose pictures she'd so often surreptitiously examined on the Internet, Alan must have a dick hidden under those baggy khaki shorts of his.

"What do you think I'm doing?" she replied, not even pretending to stop, for the first time pushing a whole finger into her little pussy, gasping slightly from the pressure and warm pleasure it gave her. "I'm exercising my rights as a woman."

"But, I mean, sis, like that? I mean, it ain't right!"

"Like what, Al? Like this, you mean..." She let her middle finger ease into her hairless vagina while pushing her top up even further to reveal all of her tiny bosom. "I'm at home. In my room. If I can't do this here, where can I?"

Alan stood transfixed, not daring to leave and too frightened to stay. Alison could sense his discomfort and was amused to see a kind of stiffening under his baggy shorts just where she reckoned his dick should be. She'd never thought of that before, but she'd had real live dick in her house all along. She didn't have to go out and look for it. She smiled cheekily at her brother and sat up on the bed. Her top fell down over her bosom, and she steadied herself with one extended arm behind her, while her other hand continued stroking her crotch. It felt so good, why should she stop?

"Look sis! It ain't right. It ain't proper! What would Mom and Pop say?"

"Hey, Al. Don't be such a party pooper! I bet you do just the same in your room when you close the door and get on the Internet."

"Well, er. Well. Yeah. Well."

"And anyway, Al. What you got hidden in those jocks of yours? I can just about see something there."

"What do you mean? Hey, come on, sis. I was just looking for my Bon Jovi CD. I didn't ask for all this."

"Oh fuck it! You know you want it!" Alison said seductively, pulling her tee-shirt up over her shoulders and head with her match-stick slim arms. And then she sat on the bed: topless and bottomless, slacks and panties around her bare ankles, staring at her brother both insolently and lasciviously. "Come on, bro! What have you got between your legs?"

Alan didn't move. A trickle of sweat made its way down his crinkled forehead. "Nothing. Nothing!" He replied without thought or consideration.

"I don't believe you! I don't believe you at all!" Alison exclaimed, pushing herself off the bed and approaching her brother. She stood in front of him, naked, her hair tied back in ribbons and pale pink lipstick on her thin young lips. "I want to find out for sure. Isn't that something I can see pressing against the buttons of your fly?"

"Come on, sis! Can't we just pretend I ain't seen you? Can't we just say I didn't come in to your room? Hey, sis! Leave me alone!" This was to no avail, as Alison carefully and slowly, looking up at her taller brother's face, undid the buttons of his shorts, feeling the stiff, hardness of his penis against the knuckles of her hands, the bangles on her wrists clashing against the khaki cloth. And then, with a sudden tug which surprised both of them in its boldness, down came Alan's shorts and at the same time his boxers, and Alison could see for real what before then she'd only ever seen on the Internet.

Fuck! It was big. And stiff. And pink, but not as pink or pale as the skin of his chest and upper thighs. Sticking out as big as her hand, if not bigger, a long sheath of stiff hard flesh with throbbing veins, pulsating and pumped up with passion. At one end was a dark brown bush of hair, whilst at the other end, a strange purple colour, was a shining, sticky, smelly glans with such an ever so tiny mouth, but slitted up-and-down, rather than side-to-side. And what was that smell? It wasn't like the sweetly sickly smell from her own pussy whose fragrance she'd sometimes rubbed against her nose when it creamed on her fingers. It was a richer, stronger, much more potent smell. She just wanted to get her nose right up against it and smell it close. Perhaps even taste it. With her tongue. Or lips. Or whatever.

Alan's penis twitched with excitement, and with a reciprocal excitement and some curiosity, Alison put the tip of her tongue on the tip of her brother's glans just above its vertical slit. Alan started. "What are you doing?" he asked breathlessly.

"You know what I'm doing," Alison replied gripping her brother's erect penis in her fist, as much to steady it as to announce possession of it. "Mom and Pop are away. We've got the house to ourselves. We can do what we like?"

"I guess so," responded Alan weakly, surrendering himself to the inevitability and logic of the moment. "What they don't know, what they don't have to know, I mean, it won't hurt them. I s'pose."

With that vote of encouragement, Alison ran her tongue up and down the sheath and length of her brother's penis: leaving a thin film of saliva behind to lubricate it and to make it shine in the early afternoon sun. One hand grabbed his hard egg-like testicles in the little bag beneath his penis that was now pulled taut and tight by the power of his erection.

"Ooh!" exclaimed Alan. "That feels sore!"

Alison momentarily wondered why, but was then reminded from her sex lessons at school what those two egg-shaped things in the scrotal sac were there for. No doubt they were charging up to splatter her with semen and sperm. Excited by the very vision of it, Alison grabbed her brother's penis in both hands and eased her mouth over the tip, opening it, oh! so very wide!, to let the glans between her lips and her sharp shiny white teeth, still being kept straight by a nearly invisible brace.

It tasted even stranger in her mouth, and it was twitching so very uncontrollably, with a mind so much of its own, while Alan's face contorted with strain and agony, but totally focused on the attention Alison was giving his still growing manhood. Alison gasped as the twitching dick threatened to choke her as it pushed against the back of her throat. She eased her mouth out and, holding his penis with one hand and supporting her weight against his thigh with the other, she looked imploringly up at her brother. All the while MTV were broadcasting some pop classic turned bland and banal by a quintet of smiling Irish teenaged boys. Her brother smiled down at her, with an expression almost more foolish than anything else.

"What now, brother?" She asked. "What's the next thing to do?"

"I guess I... er... fuck you," Alan replied, no doubt remembering the sequence of events that usually took place in a sex film. He was probably aware that normally this might also involve such added extras as DP, FC or CP. However, for the moment, normal sex, for the first time in his life, seemed plenty good enough.

"Not up the front you can't!" replied Alison. "I've been to sex education, you know. That's how you get pregnant. I don't want that to happen."

"I guess not, but I haven't got any rubbers," Alan responded with some disappointment. "I guess we just can't go onto the next stage."

Alison stroked the long warm column of her brother's passion. That wouldn't do. That wouldn't do at all. To have got this far and then just to leave it at that! "Well, how about we just do it up the ass? It mightn't be as good, but I'm sure it'd be something."

"Yeah, I s'pose so," said Alan, a little disappointed. It wasn't going to be a proper fuck at all. It was going to be something else - and Alan had always wondered what the point of doing it with girls was at all if you just poked them in the ass, since men had asses just as much as them. Still, it was some kind of a fuck. And that was better than nothing. "Ain't we s'posed to like lubricate the ass or something. So's that it opens up proper. I mean, mightn't it be all shitty and tight otherwise."

"Yeah. I guess you're right. And I guess I'm gonna have to put a plaster over my vagina" (it sounded so grown-up to be using a word like that) "so's you can't accidentally slip it in the front. Then I'd get all that creamy stuff in me. And then I'd be pregnant or something."

"Yeh! Sounds like a good idea."

Alison dashed off to the kitchen, wearing only the ribbons in her hair, while Alan naked from his stomach to his socks, sat on a pink flowery sofa in the corner of her sister's bedroom and watched a rock group in black leathers and long hair prance and preen about with guitars disconnected from any mains supply and giving a rendition of a song which bereft of volume and shrieking vocals and thunderous guitar breaks would have sounded very sorry for itself indeed.

And then as MTV switched to an image of an English indie rock group for whom dress sense was clearly a mystery, Alison returned, a plaster over her bare hairless crotch and a tub of low cholesterol margarine. Alan jumped up, his penis slightly less tumescent for the momentary reprieve, while his younger sister smiled at him.

"I've put some of this stuff up my ass already. It feels real weird. And it smells even funnier. Let's hope it works. I guess what I've got to do now is lie on my front while you stick your dick up my ass. D'you think that's what we do?"

"Yeah. I guess that's just what we do," Alan replied. Then he must have remembered something from the porn films he'd watched with his friends. "But I think I've got to poke you with my finger or something first."

"Do you? Why's that?"

"Makes it easier for the dick I guess. Opens it up, I think. After all! It's such a tiny hole, ain't it!"

"Yeah! I s'pose so," remarked Alison who'd never thought much about it. "But such big things come out of it!"

"Yeah! Guess you're right!" Alan said, as his sister bent down on the side of the bed with her young smooth buttocks raised up ever so much and the little puckered hole of her anus pointed right towards him. Cautiously, Alan put his hands on the cheeks of her ass. He's never touched a naked ass before, and he was surprised how soft and round and warm it was. But then it was a girl's ass. He eased open the cheeks and could see small traces of margarine oozing out of the puckered hole and a trail dripping down the front towards the thick waterproof plaster. "I think I've gotta put some of this marge on my dick as well, sis."

"Well, get on with it, Alan. I'm beginning to lose interest here."

Alan took the hint, took a large two-fingertip full of polyunsaturated fatty solids and smothered his dick with it, while he probed his sister's anus with a finger. It wasn't that easy just getting a finger in, even with all that sticky slippery margarine there, but bit by bit his forefinger eased in, feeling strange in the tight hole squeezed in by the slightly harder flesh on either side. His sister was moaning strangely.

"Move it about a bit!" she ordered. "Don't just stick it in!"

Alan did as he was told, pulling his finger backwards and forwards, margarine and perhaps other visceral internal things getting caught under his fingernail, while his dick twitched with excitement at the very thought of what he was doing. If his friends could see him now! Fingerfucking his sister's ass while Elton John was crooning one of his interminably tuneless songs on the TV.

Alison gasped and sweated and growled. Alan was quite frightened to see so much animal passion. Where was it coming from? Just from a little finger? He pushed it back and forth, back and forth, feeling the ass getting somehow wider and slippier and freer and easier, while his dick twitched and throbbed and pulsated. And then, he couldn't resist the throbbing red beat of his temples any more which was drowning out the strangled cat sound of Celine Dion or some other kind of shit, and in went his dick straight into the ass. And almost as quickly out again. God! It stung! He didn't know it was supposed to do that. Perhaps it was all the goddamn margarine. But the sight of his sister's expectant ass and the commands of his dick, made him whimper with an unfamiliar helplessness. And then straight back in. Easier this time. Back and forth. Back and forth. A slap slap slap sound. A squelchy, squishy, liquid feeling.

Alan was lost to the world now, like Alison. He wasn't really thinking now what he was doing, or concerned at what it might seem. The commands of his hormones dictated to him how to act, buttocks pumping back and forth, his dick in his sister's ass, while she seemed even more lost to it all than him, somehow melted into a sea of passion, her hands clutching the plaster over her crotch, while Alan's dick pushed as deep into her as it could: an ass tighter at the entrance, and strangely capacious inside, a squeezing on the glans and the neck of his dick. Backwards. Forwards. Slap. Slap. Slap. Alan was barely aware of the grunts and gasps that accompanied their lovemaking, coming not only from himself, but louder and more bestially from his sister. Slap. Slap. Slap.

"Hey, Alison! Wassup!" suddenly interjected a familiar voice. And then, a sudden silence, followed by a "I fucking can't believe it! I just can't fucking believe it! Your brother's fucking you up the ass!"

Laura, Alison's best friend from school, stood at the entrance to Alison's bedroom, bright white eyes and startling white teeth the more pronounced for her very dark skin, and short dark curly hair. She wore a pink sweater and a pair of lilac shorts, a shoulder bag dangling from a fist and the door handle gripped tightly in her other hand. Alison turned her head round, where she had been supporting her weight by her two elbows on the mattress and smiled sweetly at her best friend. All the while, Alan, not at all sure what to do, was following his instinct and continued fucking, even though Laura was standing there transfixed by a sight as arresting as it was disturbing and the television screen was erupting in a cascade of bright lights and dull sounds.