Bunny didn't seem aware of the fact that someone had come into the bathroom – although the frigging movement of her hands seemed to slow down somewhat.
Jack stood behind her, grinning fiendishly. Peter didn't know what to do. He could hardly blame the boy for doing just what he had been doing – nor could he, at this stage, announce his presence.
Then Jack began to undress.
The young man quickly stripped down naked and moved up to the shower stall, standing very close behind his sibling's squirming ass.
He folded his fist around his formidable prick and began to pump it. The knob was aimed at Bunny's ass. The shower was spraying her from the front and now it seemed that her brother was about to spray her from behind as he jerked steadily away on his meat nozzle.
Peter felt helpless.
He knew that he should interfere, yet he couldn't admit that he had been there all the time – and stroking his cock just the same as his son was doing – and because of the same visual inspiration.
And he didn't want to end it, either.
It would be a real thrill to see Jack squirt his jizz on his sister's ass. Would she feel that hot, thick geyser? he wondered. Could Jack manage to juice off on her and sneak away without Bunny knowing?
And if she did realize – how would she react?
But Bunny already knew.
She had heard her brother come in and glimpsed him from the corner of her eye.
Feigning ignorance, she kept on playing with her pussy, but she had slowed the rhythm of her selfcaress now. With her brother attendant, Bunny had lost interest in a self-inflicted hand-job.
Jack had stepped up behind her now and she could no longer see him, but she could see his shadow shifting on the wall and knew damned well that he was wanting.
She heard his cock-meat hiss through his hand.
He had already creamed on her tits and now she was eagerly waiting to feel him spurt on her ass.
She shoved her ass back, wriggling.
His red-hot knob brushed against her ass.
Bunny was too horny to carry on her pretense any longer. She reached behind her ass and wrapped her hand around her brother's cock-shaft.
Jack grinned and their father gulped. If they had turned around, they would have seen Peter now, for his head was sticking out between the shower curtains, eyes bulging and mouth gaping open.
And the jarring head of his cock was sticking out, as well, aimed like a howitzer at the other stall. Parental concern told him that he was obligated to prevent his kids from incestuous frolic – but voyeur's lust prevented the man from doing anything but watch.
Bunny tilted her wrist, rubbing Jack's cockhead against the trim cheek of her ass. Then she slipped it into the cleft between those shapely mounds.
Jack humped, driving his cock up and down through her ass-crack, his bloated balls rolling up at the hilt. He skimmed through the tight cleft and Bunny squirmed, pushing her haunches back against his belly.
She held his balls, reaching back between her legs. Jack gripped her by the hipbones, twisting her ass around as he stroked between the cheeks.
He dipped lower and as he thrust up again, the wedge of his cock-head nudged into her asshole.
"Ooooh!" she squealed.
She had both hands on him now. One was dipped through her groin, holding his cumbags and the other reached around her hip to grip his cock-shaft. She began to frig up and down his rod.
His knob flared in her asshole.
It felt wonderful to have a slab of hot cockmeat throbbing in her sensitive brown eye and the thought of feeling his slime hose right into her shit-hole thrilled her.
She stroked him quickly.
Jack humped, fucking through his sister's fist.
And the tip of his cock sank into her ass. "Oh!" she yelped.
Then she moaned as the thrill of that sordid contact hit her.
Jack had stopped humping now and he was staring down in awe. His cock-head had vanished in Bunny's shit-slot and that tight brown slot was collaring his stalk. The rod stood out between them, like a bridge spanning the gap between his balls and her bowels.
Jack had meant to cum on his sister's ass – not in it!
They stood motionless now, linked by his knob, joined together like Siamese twins.
Jack thought she might want him to pull out. But then Bunny began to stroke his stalk again, making his cock-head balloon in her shithole. He yanked back on her hips and she corkscrewed her ass.
Another inch of cock wedged up her ass.
"Jeez, Sis…" he croaked.
"It ain't!" she grated. "Wha – what?" he stammered. "It ain't incest!" she whimpered. "Fucking up the asshole ain't like real fucking!"
Jack shook like a vibrator.
"You want it, Sis?" he rasped. "Yeah – yeah – shove your big prick up my ass and ream me out, Jack – ass-fuck me silly!"
Jack groaned and began to lever in deeper.
Peter groaned, too, echoing his son – but it was far too late to do anything about it, now – except to look on with lust running like malaria through his veins.
Bunny had never been ass-fucked but the naughty vixen loved the idea – and now she was starting to really adore the fiery sensation as he slid deeper up her shit-chute.
His cock-head was the widest part of his massive reamer, spreading her tight tract out as it plowed in, blazing a trail for his stalk to follow.
It hurt just slightly, but that faint tingle of pain only served to enhance the pleasure of the coupling, a background twinge emphasizing the thrill, punctuating the steady passage of his prick into her guts.
She jerked like a fish on a gaff.
She felt stuffed to the brim already, cored out like an apple. But when she reached back again to check, she felt that half of his cock was still not up her.
Inch by precious inch, her brother snaked his cock on up into Bunny's ass. She thought that his long cock must be unraveling the coils of her guts – that his cock-head must be ail the way up into her belly. When he shot, it would be the same as if she'd sucked him off and swallowed his fuck-juice down from the other end of her digestive tract.
With a sudden lurch, he sank in to the hilt. His cumbags were ballooning in her crotch. Bunny gurgled, transfixed on his iron-hard spike.
He held it all in her and she rose onto her toes, then sank back down, the curve of her ass jammed against the flat plane of his belly.
His cock-head was glowing like a coal in the depths of her hot bowels and his shaft was levering like a crowbar in her shit-chute.
Jack held his reamer buried.
Bunny adored the sensation of having her ass brimful of her brother's prick, but now she wanted the sliding friction of the buggery.
She began to grind against him. The fit was so tight that when she pulled forward, at first, she simply dragged his cock with her. But then her ass muscles adjusted to accommodate his bulk, loosening slightly.
Jack began to hump in counterpoint and his cock started to slide in and out.
He pulled back until only his bloated knob was lodged in her asshole, paused, then fed it all back up into her seething bowels. Her ass hit his belly and his balls swung into her crotch. He was so deep that Bunny thought his prick might come out of her mouth.
Ass-fucking was a joy!
And what a handy way to get stuffed without committing incest, as well!
Peter's jaw was hanging open so wide that he seemed to be gnawing his breastbone and his eyes were bulging out like a pair of hard-boiled eggs as he watched his son shovel the meat up his daughter's ass.
He shot so abruptly that his jism was halfway across the room before he realized that he'd cum.
Like a liquid rocket glinting silvery in the light, his fuck-juice flashed right across the bathroom and fell, splattering, at the feet of the ass-fucking siblings.
Heavy beads of cum, so thick that they seemed solid, bounced from the tiles. Peter pumped back and another gooey geyser arced through the air on a high trajectory. The slime skimmed against Bunny's flank.
But the girl was so wrapped up in ass-fucking that she failed to notice that motherly fuck-juice as it squirted down her wriggling hip.
Peter milked himself bone dry.
But such was the stimulation that his prick remained as hard as a stone and his cumbags began to recharge themselves instantly, another load of thick paternal sap seeping steadily into his patent balls.
The siblings were surging to the crest now. Bunny's ass-chute was dragging and sucking on her brother's cock as if she were trying to digest the living meat from the wrong end of her canal. Her bowels sucked on his cock-head and her back passage rippled up and down on his thick stalk as it slammed in and out.
Jack jolted away enthusiastically, packing the fudge up his sister's ass in a frenzy.
She held his balls, feeling them expand as he neared the peak. Her other hand was clawing at her cunt. She shoved three fingers up her fuck-hole knuckle-deep. As she frigged them in and out, she could feel her brother's cock sliding up her twin passage, through the slender tissue that divided the naughty girl's cunt-hole from her shit-chute.
Her clit was detonating.
"Spunk me, Jack – cream my ass!" she cried.
Jack pounded his prick in like a pile driver, hiking her up onto her toes, her ass heaving higher. He hauled her back by her hipbones and plunged in again.
Bunny's cunt overflowed, spilling girl goo out lavishly. It foamed in her crotch and streamed down her thighs. Jack's balls were drenched in her swamp.
A trickle of cunt-cum ran all the way down Bunny's leg and spilled out on the floor of the shower stall, sliding into a glistening pool of slime that was already there – but, of course, the girl had no idea that her pussy-cream was blending with her father's fuck-juice at her feet.
"Shoot up my ass!" she wailed.
Jack thundered in and his cumbags exploded as they whacked into her soaking cum-slot.
His cock flared mightily, stretching her shitchute out on the throbbing contours.
"Sis!" he howled.
"Slime me!" she wailed.
His steaming-hot enema hosed into her bowels as Jack filled her with his brotherly love.
Corkscrewing in, he pounded and hammered away as he emptied his load up her ass. Bunny whimpered. She could feel every drop as it sloshed in her guts. Jack fed her the last squirt, then held his cock buried and let the final trickles seep from his piss-hole.
He had cum up her so deep that Bunny thought she must already be digesting his jizz.
Naturally, that idea made her think of blow-jobs.
She knew how scrumptious her brother's spunk was from having tasted the load he'd shot on her tits and she just knew that his cock-meat would be yummy – and now that it had been soaked in her shit-hole she figured that it would be even more tantalizing and flavorsome.
She squeezed his balls between her legs.
They had tuned slack as he drained them off into her bowels, but they tensed as she fondled them – and his cock was still rock-hard in her guts.
She could feel his sweet slime sloshing around in her bowels and her mouth was watering for another load. Bunny wanted to drink her brother's jizz by the mouthful, now that she already had an assful.
She squirmed away, the curve of her ass sucking as it pulled from his flat belly.
His prick came out of her asshole as it had gone in, inch by precious inch. The fat knob stuck in her brown eye for a moment, then slipped free.
Bunny turned to face him, dark eyes flashing.
She licked her lips, signifying her intent. Her brother grinned at the prospect – and so did a fascinated father, as he waited for the next act…