It was a cool, gray morning – unusual for that time of year. Cindy was in her room, reading a comic book, and Billy was in the kitchen, watching Sally's every move as she walked about add cleaned up the breakfast dishes.
He was getting more and more worked up as he tried to convince her to jump into bed with him. "I tell you, Mom, it'd be okay. Nobody would suspect," he insisted. "Daddy is in the East Wing, doing some plumbing, and he told me he'd probably be in there for a couple of hours. We could sneak off and…"
Sally walked around the kitchen counter to where Billy was sitting, smiled at him and ruffled his hair. "You just can't get enough, can you baby?"
"Please, Mom! Let me fuck you! I'm so horny!"
Sally thought for a moment – it would really be nice to have a good fuck, but she was beginning to feel guilty about leaving Cindy out all the time. As far as she knew, Billy hadn't fucked the girl since the day he popped her cherry. And she hadn't touched Cindy since she'd given her a bath.
"I have a better idea," Sally said suddenly. "Why don't you take Cindy to Room 122 and fuck her. Then I could watch you from next door."
Billy looked at her with interest. "Yeah-but Cindy doesn't know about fucking like you do, Mom. And last time I tried to stick my cock in, you know what happened."
"Yes, dear, I know what happened. But things have changed since then. And besides, you're much better in the sack now than you were in the beginning. Why, I bet you could turn Cindy on real good if you were slow and gentle with her."
"Hmmmm, I guess you're right. She sure is pretty. I wouldn't mind fucking her, if she'd just relax about it."
Sally laughed. It seemed so strange to hear such a young boy talking that way about fucking. But Billy had certainly been a quick learner. Why not let him give Cindy a thrill?
"I thought you'd come round. I'll go get you the key. And somehow or other, you're gonna have to convince her to go with you over there."
"No problem," Billy said.
Ten minutes later, Sally was waking across the parking lot toward the West Wing. Her heart was beating fast; her cunt was already churning with arousal.
She let herself into Room 120, took the painting down from the wall, and gazed into the next room. To her delight, Billy and Cindy were already on the bed, wrapped in an embrace.
Cindy was nude from the waist up, her little titties smashed against Billy's chest as he held her close to him. They were Frenching, their lips moving eagerly.
When they broke the kiss, Billy looked directly at the mirror, and Sally almost fainted with embarrassment. He mustn't let on to the little girl that she was being watched. It would make her nervous and ruin the whole thing.
But Cindy didn't seem to notice Billy's preoccupation with the mirror. She was fingering the fly of his pants, trying to slide her hand beneath the waistband so she could get at his prick.
Billy turned away from the mirror, smiled at Cindy and pulled her hand away from his pants. Then he said something to her and she smiled, too.
Now he attacked the fastening, and in a couple of moments, he had it undone. He pulled the pants off and tossed them into a pile on the floor, and then ripped off his undershorts.
To Sally's delight, he had a mammoth hard-on. The long, stiff cockshaft was straight as a rod, and the fat prick head pulsed sexily.
She could feel the cunt juices flowing hot and fast in her fuck hole, and she knew she would have to start jacking on her own clit and pussy. So she, too, stripped out of her clothes, her eyes remaining glued to the scene before her.
Cindy reached out and grasped her brother's prick, squeezing it gently. Then she brought her face down close to the cock knob to examine it.
Billy said something, and Cindy looked up at him in surprise. But she brought her face down even closer, then stuck out her tongue and took an experimental swipe at his prick knob.
He shuddered and patted her gently on the head, encouraging her, and she licked his prick again – this time more boldly. She paused to get his reaction, and when she saw the look of pleasure and lust on his face, her eyes lit up. Taking a deep breath, she attacked his cock with even more enthusiasm.
Up and down his prick she stroked. Now and then she would stop, point her tongue and stab it directly into the rim of flesh that separated the cock head from the cock shaft.
Whenever Cindy did this, Billy would shudder, and his cock would lurch in her hand. This only caused her to lash the sensitive spot more vigorously.
Sally couldn't believe how turned on she was getting just watching the two of them. Her clit felt as if it would burst with all the hot blood throbbing in it.
"That's it, Cindy – suck him! Suck him good!" she murmured.
She reached down and began diddling her clit, each touch of her finger sending shocks of pleasure shooting through her cunt.
She edged up closer to the mirror, her heart skipping a beat as she watched Billy pull his prick away from his sin's mouth and her back onto the bed.
As Billy began to undo Cindy's pints, the young girl looked up at him from beneath lowered eyelids, her tongue protruding slightly from her mouth.
In just a few moments, she was completely nude, her bald little pussy mound so irresistible looking that Sally had to use all of her self control to keep from barging into the room and joining in the sex play.
Now Billy went down on the little girl, his tongue snaking between the folds of her delicate pussy labes, tracing a curve from her clit to her musty little asshole.
Cindy was enjoying her brother's expert tonguing. Her little body shook as thrill after thrill rushed through her. Unconsciously, she began to play with her tits, rubbing her hard nipples back and forth between her thumbs and index fingers.
"Yes, yes, baby," Sally rasped, though she knew Cindy couldn't hear her. "Help him bring you off!"
Sally began to fondle her own tits now, raking her fingers up and over the gigantic swells, poking her nails into the hard flesh of her nipples.
At last, Billy started flicking his tongue deep into Cindy's cunt hole. And this drove the girl wild. She thrashed from side to side, making it hard for the boy to keep his tongue in the spot where it was doing the most good.
He had to clamp his hands down on her thighs and hold her still, so he could ream her out. His tongue's fuck-strokes were quick and dirty – not the long, leisurely me and rings he sometimes used with Sally.
And that was exactly what turned on the little girl the most. She threw her head back and wailed, hammering her fists against the mattress, slamming down the soles of her feet so the whole bed shook.
Looking on, Sally was beside herself with lust. She let go of her tits, opened her cunt lips wide and stuck two fingers deep into her fuck hole.
"Unh, unh, unh!" she groaned as she fucked them in and out, in and out, building a froth of pussy cream.
Without warning, Billy suddenly pulled his face from Cindy's crotch, his mouth and chin red and puffy-looking.
Cindy sat up to see what was wrong, but Billy pushed her roughly back down on the bed, positioning himself between her thighs. His cock shuddered as he aimed it at her pulsing cunt.
Swooping down close, he nudged his prick head against the entrance to her pussy. She spasmed violently, but didn't try to stop him. Instead, she opened her thighs wider, giving him easier access.
Billy licked his lips as he gazed at the juicy pink meat of his sister's pussy. Then, tensing his ass muscles, he pushed forward – not violently – but just hard enough to pop his prick head past the tight ring of muscle at the entrance to her cunt.
Sally moved in as close as she could to the mirror. Her breathing was jagged and raspy, her heart was pounding dangerously fast. She saw that Cindy cried out once in pain, but that she was already over the worst, and was now shimmying her ass, begging for more.
And Billy was quick to give it to her. Steadily, he inched forward, fucking more and more of his prick shaft up his sister's tight pussy.
The veins in Cindy's neck stood out as she strained against the pressure that Billy's cock was bringing to bear against her tender little pussy.
She blinked her eyes fast, trying to hold back the tears, but a few bright drops made their way down her cheeks. When Billy at last managed to fuck in all the way, he fell forward on top of her, his tight ball sac resting against her ass.
Cindy swallowed hard, her shallow breaths coming in quick little bursts, her body at last growing still. Billy murmured something to her, then began covering her face with grateful kisses.
Sally was overwhelmed by the terrific way Billy had broken his sister in. Right at this moment, she wished she were the little girl, having a cock fucked all the way into her pussy for the very first time. Fantasizing about that, she swirled her fingers around and around in her own cunt.
"Awwww, Christ!" she whimpered as she reached a climax.
Now Billy was moving backward, slowly sliding his prick out of Cindy's little cunt. The girl lay still, watching him, gasping now and then as his prick rubbed up against the tender walls of her cunt.
Billy paused for several moments, letting his prick head rest just within the entrance of Cindy's cunt. Then he moved forward, his face concentrated into a frown, his whole body tense.
Sally, just recovering from the powerful orgasm that had overtaken her, was barely able to follow the action. She was leaning up against the wall, trying to catch her breath, trying to get her thoughts off of her cunt and focus them on the fuck session in the next room.
Gradually, she came back to her senses, and when she looked back into Room 122 again, she was amazed at what she saw.
Billy was fucking his prick in and out of Cindy's pussy in a steady rhythm. He wasn't fucking very fast – not just yet – but he no longer paused with each stroke. He just kept pouring it on.
And it was pretty obvious that Cindy was really enjoying the way her brother was fucking her. She gyrated her ass and humped up at him whenever he thrust his cock inside, now and then encircling him in her arms and pulling him down on top of her tits.
As Billy's pistoning motions began to increase in speed and force, Cindy humped up harder at him, trying to rub her clit against his hairy groin. And though the boy wiggled his ass and ground his hips so his whole body pressed against his sister's, she still didn't appear to be getting as much stimulation on her clit as she needed.
Looking wildly around her, her eyes suddenly lit up when they rested on the pillow. She reached up and snatched it, raising her ass and slipping it underneath without interrupting her brother's fucking.
Suddenly Cindy's forehead wrinkled into a frown of such agony that Sally knew she had crossed the line, and was heading for a mind boggling orgasm.
Now Billy's groin was hitting Cindy's cunt mound directly, and the girl was crying with passion, humping up at him violently. She raised her legs off the bed, making the angle of contact even better, and Billy grabbed her legs, slipping them onto his shoulders.
Cindy threw back her head, opened her mouth and wailed. Even Sally heard the heartrending cry, and her cunt went back into gear, churning out a flood of slick pussy juice.
As Sally had always known, there was nothing quite like jacking off while watching another woman have a powerful orgasm. It made her own orgasm really powerful.
And now, as the girl twisted and squirmed beneath her brother, coming and coming, coming, Sally got off, too. One after the other, quick, satisfying orgasms rocketed through her cunt. And her clit battered from all the diddling she had given it, throbbed with a delicious mixture of pleasure and pain.
Only a moment after Sally came, she saw Billy rear back and then jam forward into Cindy. It must have been a tremendous orgasm for he shook and shuddered for nearly a minute afterwards, his ass cheeks tensing and relaxing as he emptied his cum-load.
Sally was tempted to go next door in the aftermath of the fucking, but some instinct told her to hold on for a little while longer. And she was not disappointed.
Billy raised himself off Cindy, letting his shriveled prick slide out of her pussy, trailing cunt juice after it. Then he began to stroke her hair.
From her hair, his hands moved down over her little tits. This time, he did not squeeze or knead them, but just petted them very tenderly.
Cindy responded, smiling lovingly at him, reaching up to put her hand on his and direct it over the areas she most wanted touched. She directed him down over her belly and to the soft hump of her smooth cunt mound. As if the powerful orgasm she had just experienced hadn't been enough, she pulled on Billy's second and third fingers, aiming them at her cunt.
Sally looked on, bug-eyed. The girl was tireless!
Billy began diddle her cunt but then he dropped, leaned down and whispered something to her. She gave him a shocked look, but as he continued to speak to her, a lewd smile crept across her face. At last, she nodded her head vigorously and moved over on the bed.
The next thing Sally knew, the two of them had gotten themselves into a perfect 69 position, Cindy slurping onto her brother's limp prick, and Billy tonguing her pussy.
Sally watched in disbelief. She hadn't shown either of them about 69, but they had managed to figure it out for themselves. And they were doing it like they'd done it a hundred times before.
The way Cindy was sucking and licking on her brother's prick, it was fully hard in moments. Then she launched into a cocksucking routine that rivaled the best oval of her lips over her pearly teeth, she went down on Billy's prick knob, then sucked her way halfway down the cock shaft.
Sally held her breath, wondering what the girl would do next. Surely there was no more room in her mouth for the rest of Billy's prick meat. But this problem did not seem to worry Cindy. Arching her neck, she took a deep breath and sucked his prick down into her throat, so his jism balls bounced up against her chin.
"Holy shit!" Sally gasped, her eyes wide in amazement.
The way Cindy's throat muscles were moving, Sally could tell she was running them up and down Billy's prick, massaging it like a pro.
And there was no question that Billy was enjoying it. His face was contorted with lust, and he had stopped his cunt-licking as waves of excitement washed over his slim frame.
But he pulled himself together enough to fuck his tongue into his sister's soft pussy and start pistoning it in and out in a fast, steady rhythm.
It was too much for Sally. Her cunt was throbbing with a need that her fingers couldn't possibly satisfy.
"I've got to get over there – I don't care what they say!" she groaned.
She carelessly threw on her clothes, left the room and walked next door. With her pass key, she unlocked Room 122, stepped inside and locked the door behind her.