In the master bedroom Bill and Karen tossed and turned, unable to fall asleep. Unknown to each other, they were having almost identical thoughts. Both had vowed to give up their young lovers, and both were so horny they were almost in pain.
Bill tried to ignore his aching hard-on, but he couldn't stop the helpless visions of Stacy at the beach, mounting him, wantonly thrusting her little fiery wet pussy onto the impalement of his dick. Christ, that exquisitely tight cunt of hers… He ached to have her again.
And why not? She wanted it, and so did he.
He'd already had her once, so what difference would it make if they did it again? As long as no one knew… Oh, damn it all, why kid himself. He wanted the girl, and he was going to have her, even if she was his adopted daughter.
Having made up his mind, Bill slipped quietly out of bed and tiptoed out of the room, unaware that his wife was awake. He intended to go right to Stacy's room, ball her, get his agony over with.
Karen hardly noticed Bill leaving, she was so engrossed in her own thoughts. She assumed he'd gone to the kitchen for a snack, as he sometimes did when he couldn't sleep. She took the opportunity to moan out loud.
"Oh, God," she sighed, "what am I going to do?"
She knew what she wanted to do. She wanted to drop all her reservations and fears, wanted to have a full-fledged affair with Mark. It would be so great to be well and regularly fucked. That wasn't asking so much, and she needed it so badly. If only he weren't so young, if only he weren't her nephew…
Karen's cunt seemed afire with need, and she knew she'd never sleep when she was so acutely horny. She could masturbate, of course, but it seemed inadequate and childish to her now that she'd made love with Mark. She ached for his deliciously fat young cock.
Oh, to hell with it – the damage was already done, she'd already fucked the boy once. Another time wouldn't make that much difference. She had to have the boy, she just had to.
Karen got determinedly out of bed and marched down the hall in her nightgown. Bill would assume she was in the bathroom reading, which she often did when she couldn't sleep. She was just approaching Mark's bedroom door when, to her astonishment, Bill came out of Stacy's room.
They stared at each other. Karen wondered what the hell her husband was doing in the girl's room. Bill wondered why Karen was standing at Mark's door, her hand raised to knock.
Husband and wife slowly blushed deep red with guilt.
"Bill," Karen said, "what are you doing here?"
"I could ask you the same question," he replied. "As it happens…"
He didn't get any farther. Just then they heard a strange cry, a shrill squeal, coming from behind Mark's door.
Bill and Karen exchanged puzzled glances. Neither said anything. They were in silent agreement to find out what that noise was, but without giving away their presence. They listened, and other noises followed – sighs, gasps, grunts, squeals.
"Oh, Jesus," Bill whispered. "This could be bad. Stacy isn't in her room."
"You mean…" Karen stopped and blushed. "Oh, no, Bill, that just couldn't be. The kids may be a little spoiled, but they wouldn't do anything like that."
"Then what are those noises?" said Bill. "You know damned well what they sound like."
Karen blushed and nodded. The noises were unmistakably the sounds of excited and vigorous love-making. "I… I can't believe it," she said numbly, "I just can't."
"Well, there's only one way to find out," said Bill.
He put a finger to his lips, signaling quiet, and then silently opened the door to Mark's room. The hinges were well-oiled, and the door swung open without a sound. Karen and Bill were hidden in the shadows of the hallway, but Mark's bed was well-lit by his bedside lamp.
"Oh, my God," Karen gasped.
Mark was balling his sister. It was as plain and crude and obvious as that. No matter how the stunned watchers tried to interpret what they saw, it was clear that the kids were fucking. Certainly they weren't playing Monopoly or having a cozy chat.
Stacy lay beneath her brother, her legs spread wide for him, her slim hips moving vigorously in time to his thrusts. Her pretty little snub-nosed face was twisted into a horny leer, her little pink tongue flashing out to lick her lips. She was clinging hard to Mark, digging her nails into his sweaty shoulders. With the door open, Karen and Bill could hear her words distinctly.
"Oooo, yeah, Markie," she squealed, "do it to me… That's so good… You're the best, big brother, the best fucking lay in the world…"
Mark's body lunged up and down over his naked sister, his rosy stiff cock zipping in and out of her cunt and gleaming with her juice. He was ginning happily, panting, sighing.
"You're the best, too, baby sister," he said hoarsely. "You got the tightest hottest little box I ever fucked… Oh, man, yeah… It's out of sight…"
Karen looked like she was about to scream, so Bill clapped a hand over her mouth and dragged her down the hall, out of the kids hearing.
"Listen," he said, "we can't just go rushing in there. We have to talk and decide what to do. And we have to be totally honest with each other." He stopped for a moment, and Karen noticed that his face was pale and sheepish-looking.
"Karen," he said haltingly, "I'm terribly sorry, but I have to tell you this. I'm not excusing myself, I'm just telling you, so you'll know about it when we face those kids. I… I made love to Stacy at the beach today."
Karen fell against him, weeping. "Oh, Bill," she said miserably, "I'm just as guilty as you ate. While you and Stacy were gone, Mark and I made love. I'm so sorry. I knew it was wrong, but…"
"Never mind," Bill said, giving her a reassuring hug, "I know how it is. The point is, what are we going to do now?"
"Well, we can't let them make love," Karen said. "It's horrible – brother and sister. We've got to stop them, make them understand that it's wrong."
"I agree," said Bill. "We can work on that other problem later. I mean about us and the kids. Come on."
They hurried back down the hall and peered out of the shadows into Mark's room. Mark and Stacy were still hot at it, fucking joyfully and furiously. Now Bill and Karen could even hear the soft lewd squishing noise of Mark's thick meat in Stacy's tight wet box.
Somehow that noise made Karen feel hot and horny all over. She knew it was wicked, but it just turned her on powerfully. She felt her cunt contact sharply in sudden arousal, and then a steamy trickle of pussy juice ran down her thighs.
Bill had the same reaction. That intimate wicked noise jolted him with lusty arousal, and he felt his cock going rock-hard in his pajamas, tenting his crotch obscenely. Jesus, watching those kids fuck was a real turn-on…
Bill and Karen hesitated just outside Mark's door, reluctant to break that strange spell. Watching the handsome brother and sister ball each other was tremendously exciting. Lust made the adults hesitant and confused.
"You come yet?" Mark asked his sister.
"No," Stacy panted, "I don't want to yet. I want this to go on and on."
"Me, too," said Mark. "I got a cock-stand that won't quit. How about having it another way, just for fun?"
"Sure," Stacy said eagerly.
Mark lifted himself off his sister's cuddly warm body and gingerly withdrew his aching hard-on from her creamy little twat. His cock was rosy-red from the friction of their hot fucking, and it snapped up to hug his belly.
Karen gazed hungrily at her nephew's wonderfully stiff cock. My God, what she wouldn't give to change places with Stacy, to have that rigid fat boy-cock thrust hard up her starved cunt. She almost moaned aloud at the thought of it, and more hot cunt juice ran down her inner thighs.
"Let's do it dog-style," Stacy giggled.
"Fine by me," Mark said, grinning.
Stacy rolled over and stuck her cute little butt up in the air. From the dark hallway Bill could see his adopted daughter's delicious little pink pussy, wet and open and eager. His cock lurched with horny longing and drooled a big drop of juice. Christ, how he'd like to be in Mark's place, shoving his swollen dick into that fiery little box of hers…
Still grinning, utterly without shame, Mark knelt behind his sister and wedged the big hard purple head of his cock into her tiny, soaked cunt mouth. He just held it there a moment, teasing her, and Stacy whimpered and twitched her ass impatiently.
"Come on, motherfucker," she laughed, "get it in there… or have you fallen asleep?"
"Not a chance," Mark chuckled. "Hang on, Sis… you're gonna get some cock right NOW."
He pushed hard into her, and Karen and Bill watched hungrily as his fat pink prick shot up his sister's tiny hair-fringed twat. Stacy moaned hoarsely and raised her cute little ass even higher to take his thrust. His swollen rosy balls came to rest against her pussy.
"Ooooo," Stacy howled. "Oh, YEAH… Now fuck me, Mark, fuck me hard…"
Mark seized her slim hips to steady himself and started balling her in deep swift strokes. His freckled face flushed with horny pleasure, and he grinned and panted. By now Stacy's lusty little box was so creamy that his thick meat made a very loud slurping noise as he reamed her.
Karen staggered back against Bill, dizzy with longing. Just as horny as she was, Bill slipped his arms around her and cupped her big melon-size breasts, squeezing them hungrily through the thin silky material of her nightgown.
"Oh, God, Bill," she whispered huskily, "I don't know what's come over me, but I feel so… so strange. I don't want to stop them just yet."
"I know," Bill said, his voice raspy with longing. "I feel the same way. Let's just stand here and watch for a while. The harm's already done anyway. We might as well let them finish."
He tugged Karen's flimsy nightgown down off her shoulders and breasts, and she didn't stop him. She wanted to feel his scorching hands on her naked tits. She stifled a moan of pleasure when she felt him cupping her big throbbing jugs, squeezing them almost painfully hard.
Bill pressed his body against hers, and she felt the long rigid line of his erect cock against her ass. She shuddered with excitement. She reached back, fumbled around, and finally touched his tented fly. She feverishly rubbed the rock-hard pulsing line of his cock, feeling its fierce heat through his pajamas.
"Baby, baby," Bill moaned.
Meanwhile Mark was working up a good sweat as he vigorously balled his little sister. He liked the canine position because he could watch his cock going in and out of her, watch how it stretched her little pink pussy lips and drove cleanly into her right up to his balls. It made him feel powerful and commanding.
Stacy helped out with her appreciative cries and the horny jerking of her hips and the furious hot creaming of her tight cock-stuffed cunt.
"Oh, yeah, Markie," she whined, "ball me, fuck meee… Shit, that's good… I love it…"
"Well, you're gonna get lots more, little sister, before his night's over," Mark panted. "I really dig balling you. Honestly, Stacy, we should have thought of this a long time ago…"
"I know," Stacy sighed, "I know…"
In one part of his mind Bill realized how scandalous and strange the scene was, he and Karen watching their adopted son and daughter fuck, getting hotly turned on themselves. Decent parents would have run right in there, pulled the kids apart and punished them severely. It was sick to just stand there and enjoy it.
Well, so it was sick. So he didn't want to be decent. To hell with it. He and Karen had been middle-class and decent all their married life, and what good had it done for them? They bored each other in bed – that's what it had done for them.
Now, however, watching Mark lustily balling his kid sister, they were getting powerfully aroused. For the first time in years Bill found excitement in fondling and squeezing his wife's huge ripe tits. Karen groped hungrily for his cock, turned on to him for the first time since he could remember. Yes, this scene might be "sick" to other people, but it was doing his marriage a lot of good.
He lifted up the back of Karen's gown and shoved his hand between her legs. She moaned softly and ground her pussy eagerly down on his hand. Her slit was scorchingly hot and very wet, soaking his hand in an instant. Bill grinned in the darkness.
Karen leaned dizzily against his chest, her whole body aflame with lust. She wanted to do wild dirty things, and she didn't give a shit what the rest of the world might think. She slipped her hand inside the fly of his pajamas and grabbed his dick, pulling it out so she could play with it.
"Yeah, baby, frig me," Bill whispered eagerly.
"Play with me, too," Karen whimpered.
Bill's fingers tickled through her wet swollen snatch, and then she felt him grasping her hot aroused clit between his thumb and forefinger. He began to knead the fat little button, and she almost fainted with pleasure.
"Yes, darling, yes," she gasped, "keep doing that… It feels so good, Bill…"
She curled her fingers around his bloated stiff cock and began to pump it. Bill shook with pleasure. "Yeah, that's what I want," he whispered. "Pump my dick, baby…"
All the while they kept their eyes on the kids, their excitement reinforced and magnified by watching the handsome young brother and sister fucking dog-style. The kids were clearly having as much fun as their parents, humping away furiously, howling and gasping their pleasure. Mark's cock dripped with Stacy's hot pussy juice, and both kids were flushed and grinning.
"Get it in farther, Mark," Stacy howled, "deeper…"
"I'm up to my nuts already," Mark laughed. "I can't get any deeper."
"Oh, shit," Stacy whined.
She thrust her saucy little ass even higher into the air, allowing her brother to penetrate all the way to her tender womb. He battered her, fucked her roughly, but she got off on the weird combination of pleasure and pain.
Nobody could fuck like her handsome big brother. Mark was right, they should have thought of this long ago. Stacy joyfully tightened her strong young cunt muscles around his firm young prick, squeezing him, tugging him ever deeper into her insatiable, boiling box.
"Oh, wow, that's great, Sis," Mark whined. "Your cunt's so fuckin' tight… Oh, man, you're squeezing me… Far out…"
He'd had some beautiful and exciting women in his young life, but none of them could ball like his baby sister. He'd never fucked a cunt so exquisitely tight and muscular and gripping. He pounded her mercilessly, ramming his thick hard meat against her womb, knowing she loved it.
"Fuck, fuck, fuck," Stacy chanted, "fuck me, big brother."
"You bet I will," Mark gasped. "I love your cunt, little, sister…"
The dirtier the kids' talk became, the more it aroused Karen and Bill. They swayed against each other, frigging each other furiously, trying to stifle their excited cries. Karen's hand flew up and down the stiff length of her husband's cock, Bill tugged and kneaded her soaked, throbbing clit. They hadn't been so hot for each other in years.
"Oh, God, Bill," Karen gasped, "I can't stand it another second. You've got to fuck me."
She dropped to her knees in the hallway, her slippery little clit escaping his hold. She wantonly threw her filmy nightgown up over her creamy round ass and opened her legs wide for him, adopting the posture of a bitch in heat. Even in the shadows Bill could see the bright trickle of cream from his wife's swollen hair-fringed cunt.
He quickly dropped his pajama bottoms down to his ankles and sank to his knees behind her. His cock weaved heavily, lewdly, in front of him, dripping hot juice. He seized Karen's trembling hips and feverishly maneuvered his swollen meat around in her slippery wet pussy.
At last he found her oozing steamy cunt mouth and eagerly split it with the huge knobby head of his cock. He thrust into her hard, penetrating her eager wet twat in one brutal thrust.
"Ooooo!" Karen howled.
She felt Bill's wonderfully long thick cock stuffing her hungry cunt. It felt marvelous. Bill moaned loudly as he worked his stiff meat up to her womb. They began to fuck like it was going to be rationed, fast and hard and furiously.
"Yes, darling, YES," Karen whined. "Oh, God, I love it…"
"You're so fucking hot in there," Bill sighed. "I want you, Karen."
Still they kept watching the kids. It increased their own excitement. Mark's slim butt was flying now, flashing whitely as he balled his squealing little sister.
Mark thought he heard a strange noise from the hall, but he was cool enough not to glance that way. He kept on fucking Stacy as if nothing had happened, but presently he took a peek out of the corner of his eye.
He couldn't believe what he saw, so he looked again. Far out – Bill and Karen were out there watching them, so turned on that they'd started to fuck, too. Mark suppressed a snort of amusement. He could pretty much figure out what had happened.
"Stacy," he gasped, "Put your legs out straight. I wanta lie down on you."
His sister obeyed, always ready to experiment, but she didn't like the results. Mark's cock didn't get far into her this way.
"Hey, Mark," she complained, "this is no good. I want…"
"I know," he interrupted, whispering into her ear. "I just wanted to tell you something. Now, don't turn you head. Just take a peek into the hall."
Stacy obeyed, then stifled a giggle. "Oh, wow," she whispered to her brother, "too much. I bet they heard us and came to stop us, and then…"
"Yeah," Mark chuckled, "I bet that's how it was. Anyhow, Sis, we've got them right where we want them. If you see what I mean."
"Yeah," Stacy said wickedly, "I see what you mean. So bring me off, brother, and then we'll have some fun with them."
"Right on," said Mark.
He raised himself to his knees again and started balling Stacy harder then ever. The hot friction made both kids howl with pleasure. In moments he felt his little sister's cunt gripping him like a vise, and Stacy screeched as a giant climax rocked her body.
"Come in me, Mark," she howled, "come in meeee…"
Mark was more than ready to do so. They'd been balling for at least a half hour. He gasped as he shot his jism into his little sister's nipping box for the very first time. Dammit, she was a sweet piece of ass. He'd get back to her, but now he and Stacy had some very important business to take care of.
They rolled apart, panting, and Mark reached up and switched on the overhead light – brightly illuminating both the bedroom and the hall.
Bill and Karen were caught in the glare of the light, stunned. They held quite still, Bill crouching over Karen, his cock thrust deep into her. They started at the kids.
Holding hands and grinning broadly, Mark and Stacy climbed off the bed and walked over to their new parents.
"Wow, Stacy," said the leering boy, "will you look at this? Uncle Bill and Aunt Karen are balling right here in the hall."
"Too much," said Stacy, smirking. "Why would they wanta do that?"
Bill groaned and drew his long stiff prick out of Karen's hot dripping box. Blushing furiously, he and Karen got to their feet and made feeble attempts to cover their crotches with their hands.
"Well, uh, this can be explained," Bill said lamely. "We don't want to talk about it right now, though. It's very late, and you kids ought to be asleep. In the morning…"
Mark and Stacy burst into loud laughter.
"Aw, come off it, Uncle Bill," said Mark. "Quit bullshitting us."
"Mark, your language!" Karen gasped.
"But that's what it is," Mark replied, "a load of bullshit. You guys are trying to pretend that nothing happened. But Stacy and I saw you, balling right here in the hall and watching us. Can you explain why that was happening?"
Bill and Karen exchanged sheepish glances. It was a terribly embarrassing situation. They were the parents of these kids, and they were supposed to give them an example of decent behavior. How in hell were they going to explain what had happened?
Stacy saved them the trouble.
Giggling, she said, "We know what you did. You heard us getting it on, right? And you came to stop us. Only you got turned on watching us, and you started to make out. Isn't that what happened?"
Still the adults couldn't answer. They felt too ashamed of themselves. They weren't sexually liberated like the kids, couldn't admit their own wicked thoughts. Bill and Karen hung their heads.
"Oh, shit, don't feel bad," said Mark. "We understand, and we think it's great. We got off on watching you, too."
"Oh, my God," Karen moaned, "this is awful."
"No, it's not," said Stacy, "it's wonderful. Now that we all know about each other, we can have fun together."
Karen gasped, and Bill said nervously, "Just what do you mean by that, young lady? What are you suggesting?"
Mark chuckled slyly. "Figure it out, Uncle," he said. "It's not hard, it is? Stacy means we can all get it on together, the four of us."
Karen swayed against Bill, too shocked to speak. Bill himself had to catch his breath before he replied.
"Mark," he said sternly, "you must be joking. We're your adopted parents. We can't go to bed with you."
"Why not?" said Stacy. "You already did. You fucked me, Uncle Bill, and Mark fucked Aunt Karen. So what's the big deal? Why can't we do it together?"
Karen and Bill simply couldn't believe what was happening. Their own son and daughter were asking them to form an orgy. It was unbelievable! They didn't know what to say.
"Hell, we're wasting time," said Mark. "Let's go to your room. That bed's big enough for everybody." He grabbed Karen's hand and led her down the hall. She was too stunned to resist.
"Come on, Uncle Bill," said Stacy, taking his hand. "You'll really dig this. It's a lot more fun with a group."
Bill staggered along with her, his mind completely blown. It had to be a dream! But Stacy's hot little hand was real enough.