Big Bed Big Changes

All characters represented herein are over the age of eighteen, and entirely fictional.

"Oh!" The exclamation was soft, muted, but enough to rouse Faith from sleep. She felt the king-sized mattress rocking under her, slowly, unmistakably.

Someone was having sex in bed next to her.

Two someone's, to be a little more precise. It wasn't the kind of rocking which came from a solo performance.

She realized in mounting horror, that unless something serious had changed in her brother's relationship status over the past few hours, there were only two people who could be fucking beside her- her brother, Ben and their mom, Rachel.

Obviously, the setup wasn't ideal, but it's not like he'd tripped and fallen inside her. They'd been forced to share a single bed ever since their father had left, leaving mom destitute in the divorce, forcing them to move into a double-wide on the outskirts of town. The reasoning was sound: Faith was frequently out at college, her scholarship more than covering tuition and board. Ben was only a few months away from following her, his prodigious brain giving him excellent opportunities.

If they had to live with a single bed in a trailer park, with a rickety old bed frame for a few months, where was the harm?

The harm Faith was now watching first-hand, her eyes adjusting to the gloom enough to watch her brother's hips moving. He was undulating against their mother's rear, clearly penetrating her, vaginally or anally from behind. The room smelled sickeningly of sex, of incestuous copulation between the high schooler and his mother.

"Oh, ah!" Their mom was clearly having trouble containing herself as her son slid in and out of her slit. Faith watched her mother's hand grasping back against Ben's ass, clearly encouraging him to go faster, deeper, harder. If the slick, slippery sounds were anything to go by, he was immersed in her vagina, his cock sliding on her natural lubricant, rather than relying on gel or fluid for an anal fuck.

Encouraged by their mom's pulling, Ben obliged, speeding his thrusts into her pussy, a slick slapping sound filling the air of the cramped bedroom. His own grunts now joining the soft sounds of his mom's pleasure

Faith bit her lip. She wanted to stop them, she was disgusted with them. But the proximity of their incestuous copulation was affecting her. It was only natural for to feel some arousal at the sex happening mere inches from her, and her hand shook with the taboo of it all as her baby brother rammed himself in and out of the woman that had raised them.

She felt wetness staining the crotch of her sleep attire, a liberated pair of boyshorts. Was she really getting turned on by watching her little brother fuck their mom?

She felt hot.

The room smelled of sex.

Her vagina was burning with lust.

The choice was obvious, and her fingers wandered down her body to fulfill her secret, taboo desires. They couldn't say a thing about her pleasuring herself, at least it wasn't incest!

Her right hand snuck under the waistband of her boyshorts, finding the material saturated, pressing against her slit. She bit her lip as she spread her legs slightly, unsticking the soft material with her fingers as they encountered the veritable pool of liquid, warm, sticky evidence of her own perversions.

"Do you like it bare, baby? Do you like feeling mommy's hole with your bare cock?" Rachel was weedling Ben, talking dirty to him as though she hadn't taught him to read. Faith almost gasped at the implication, she assumed they'd at least been smart enough to use protection! Was she trying to get pregnant?

Faith knew this was a risk for her mom. Doing the math in her head, she realized just how much of a risk it really was, a week out from her mother's last period given the tampons she'd seen in the trash. She therefore knew, somewhere around this time, her mother was at her most fertile- or rather, they both were, considering their periods had synced.

The idiocy of the situation almost overwhelmed her, and she pushed a finger into her own pussy, giving a tiny intake of breath as she felt the heat emanating from between her legs. This was turning her on in ways which simultaneously ashamed and confused her.

Faith tried to stay quiet, one hand clamping over her mouth as she began to finger herself. Ben's cock sounded weighty, thick and manly. The way he clutched their mother to himself, eclipsing almost her whole body with his mere inches from his supposedly-sleeping sister was a masculinity she didn't know she appreciated.

But she was appreciating it now. Her pussy was dripping, literally dripping, with excitement as it never had before, her fingers moving quickly, a second joining the first in frantically pushing in and out of her tight hole.

"I'm going to

own

you!" Her brother hissed, accompanied by a groan of pleasure from her mom, this was clearly an avenue of eroticism she enjoyed. "I'm going to show you why you're mine, then I'm going to claim your fucking womb!" Rachel quivered suddenly on hearing her son's words, shaking the whole bed and gasping again and again.

She was cumming around his cock!

Faith's eyes were wide as she watched her brother continue to pound their mother's pussy unabated. She'd never met a boy who could keep going for this long without a break. Her own fingers were flashing in and out, her thumb rubbing her clitoris in a circular motion, her entire hand, and the boyshorts down to her ass now drenched. Her legs spread slightly of their own accord, giving her better access despite the limitations of her sleep attire. She shifted minutely, trying to give herself better access to her needy pussy, the heat burning her from the inside out in bursts of desire.

She bit down on the hand which had been clamped over her mouth until it hurt. She needed to scream, to spread her legs fully, to hump against her hand and feel herself clench around the fingers tantalizing her.

Above all else, she needed cock. She needed a thick cock to plunge in and out of her, to plug the hole she felt in her world, a living, burning pillar of flesh around which to ground herself.

"You're a horny little slut, aren't you?" Ben's words made her freeze, her teeth still pressing into her hand, terrified of being caught despite her arousal. His movements were lazy now, slowly pumping into their mom.

"Y-yes baby, I'm your horny little slut, I'm yours." Rachel mumbled, her voice indistinct, doubtless hazy from her earth-shattering orgasm.

Faith's heart was pounding a mile a minute. Her brother hadn't heard her, he was still talking to their mother. She redoubled her efforts at her own vagina, excited despite herself to listen to her little brother cum, eager to hear him spray his DNA into their mother, to take the ultimate risk inside her unprotected, fertile hole.

Rachel's goal was clear to Faith: To have an incest child with her son. It was as disgusting as it was arousing, a promise of genetic abnormalities and inbred traits. Although she'd heard of incestuous offspring having better sex characteristics, she drew most of those up to fetish shit.

But if her mother had bought into that fetish shit, she was about to milk her eighteen year old for his sperm, to make him spurt semen uncontrollably, and plant his baby into her belly. Faith had to stop her, right? She had to stop him from making the biggest mistake of his life!

In order to do that, she'd have to stop herself first. She had to stop masturbating, quivering in fear and excitement, loving the taboo nature of her perverted malfeasance. She willed herself to stop, knowing it was so wrong, so important that she prevent her mother from being impregnated.

She tried, she really tried.

Her fingers didn't respond. Her pussy didn't stop convulsing and clenching around them. And she

definitely

didn't say anything.

Not that she really needed to.

"I'm not talking to you." Ben stated, matter-of-factly. Faith heard her mother gasp in surprise, and a slick sound let her know that her brother had just pulled his cock out of Rachel. "I'm talking to my big sister." Faith gasped as he rolled over, presenting his totally naked form to her front-on. Even in the darkness, she could see his grin.

Faith gasped in shock, caught with her hand literally down her pants, the other dropping from her mouth. It was half in surprise that he'd been talking to her, half in shock at seeing his penis for the first time.

It was just as thick as she imagined, veins running up the sides, a smooth cockhead aimed up to greet her, full of blood. His entire member was throbbing, bouncing up and down with his heartbeat.

She watched as her mother popped up over his shoulder, her face blotchy and embarrassed from sex, equally naked.

"F-Faith! Oh my god, this isn't what it looks like!" She stammered, eyes wide as she realized her daughter was masturbating to their illicit, incestuous lovemaking.

"She knows what's happening, and what's more, she likes it." Ben's statement was simple, almost matter-of-fact. He moved down the bed, reaching out to hook her boyshorts with a pointer finger. "She wants to join in, right?" He grinned up at Faith, pulling her undergarments down, leaving her with only a thin cami top over her pert breasts, standing taught against her hard nipples.

Faith watched, mouth agape as her brother exposed her slick vagina to air. It was cold on her skin, the rapidly-drying liquid coating both her fingers and her labia, all the way down her butt crack. She didn't try to stop him, indeed, she felt her legs spread of their own accord as her boyshorts came off, leaving her completely unprotected.

"Ohh, babygirl..." Her mother cooed, sliding into the unoccupied space left by Ben as he gleefully crawled up the bed towards her, admiring his new prey. "You're going to see what made me break all the rules for your brother, you're going to feel him push deep, deep inside you." The older woman licked her lips, watching her son's penis throb as he stared at his sister in a perverse expression of lust.

Faith glanced over at her mother, admiring her big and natural breasts, sagging slightly with age but still attractive. That's what had attracted her brother, she decided. She didn't trust herself to speak, but simply opened her legs to Ben, an invitation without equal.

"Sissy, I was waiting for this, we've been waiting for this." She started at the use of her childhood nickname, even as Ben crawled atop her, his arousal evidenced as his penis pushed against her pussy. He was still wet with their mother's vaginal secretions, slippery and hard with desire. and she felt his breath, hot against her face for a moment before he pressed his lips to hers. After a second of indecision, she gave into him, feeling his tongue dart into her mouth. He tasted like spice, like unforgivable transgression, like the desires she held close in her heart.

"Let mommy help you, my babies." Rachel reached between their bodies, to where Ben's meat pressed against Faith's mons pubis, the unshaven bush cradling his manhood. She began to stroke him, back and forth, seemingly enjoying the feeling of her own fluid coating her son's penis. "You're going to make the most beautiful love." She whispered into her daughter's ear as Ben groaned with pleasure, breaking their kiss and causing them to both look down, watching as Rachel slowly pushed his cock downwards to rest against Faith's pussy lips. "And the most beautiful incest children." Faith gasped as her mother voiced the un-voiceable, and as her younger brother's cockhead parted the curtains of her labia, his skin hot against hers as he penetrated his sister for the first time.

"Oh fuck mom, she's so tight!" Ben exclaimed, pushing into her with excitement, but unable to get far into her despite his existing lubrication.

"Hey! Ow!" Faith exclaimed, but her mouth was captured by her mother's lips, sealing off her complaints. She moaned into Rachel's mouth as her brother slowly worked his cock into her, pulling out, then pushing back in between her pussy lips. Rachel continued to stroke her son's shaft, spreading the fluid her daughter's vagina secreted downward, making it easier for him to push inside.

"Just one more-" Faith's eyes shot open as Ben's words were cut off by a moan of pleasure, his cockhead popped into her, followed quickly by half his shaft, plunging into her vaginal canal. Her mom broke off their kiss to grin up at her son.

"Good job sweetie." She returned to Faith, her fingers leaving her son's penis, and working on her clit instead. "Breed her, breed her right now!" Faith stared at her mother, eye-to-eye, feeling Rachel's breasts soft against her upper arm, touching her as her brother began to thrust with excitement.

"You going to be my fucking breeding slut sis?" Ben was talking to himself more than to her, Faith could tell. She wasn't sure she could've answered even if it had been a real question, as her legs began to quiver as his penis throbbed in and out of her pussy, his strokes becoming longer and longer as he finally lubricated the last inch of shaft.

Faith felt the world dissolve, her blood pounding in her eardrums. The sensations of her mother toying with her clit as her brother slammed in and out of her, totally unprotected, was surely the best she'd ever felt. Period.

It was like a wave crashing against the shore, a universe of stars filling her blood as she cried out in ecstasy, her vaginal walls clenching and unclenching around his dick, her abs rippling.

Ben couldn't hold on, he'd already been fucking his mother for an indeterminate period, and the stamina Faith had so praised clearly wasn't able to adapt to her tight wetness, particularly as her biological imperative to breed squeezed his shaft, seeking to milk his sperm directly into her eggs as quickly as possible.

"Fuck, FUCK! I'm cumming, oh fuck I'm cumming sissy!" He gasped, and from somewhere in orbit, she felt her brother's penis swell inside her, his cockhead dragging against her walls.

This was fine by her. It shot her higher into the stratosphere, staring into her mother's eyes as she felt his orgasm blast into her womb.

He was spurting his jizz deep into her, just like he'd undoubtedly done to Rachel. He tensed, frozen in a rictus of orgasmic bliss, a reckless young man in a throes of his thoughtless excess.

"Yes, honey, all inside, yes!" Her mother encouraged her brother's breeding frenzy.

How many of her brother's sperm were swimming through her cervix right now? Three hundred million? Half a billion? She shivered in pleasure and disgust, watching with a strange feeling of detachment as Ben thrusted his seed into her, pulsating and groaning as he emptied himself into his sister.

Was it really going to be so bad? Was it really going to take? If he'd been fucking their mom for any serious length of time without protection, he might even be sterile. It's not like she was going to let him go again or anything, right?

Her mom reached up, kissing her brother and holding him close to her, letting his balls finish draining into Faith's birth canal.

With a slick sound and another moan, he pulled out, the cum starting to dribble out of her freshly fucked flower.

"Go get another one of those little blue pills baby, we're going to make sure your sister gets pregnant." Rachel grinned down at her daughter.

Faith almost jumped to her feet, nearly made a violent exit and equally rude exclamation. But just like her earlier instinct to separate her mother and brother, she couldn't force herself to move.

She made sure to tell herself she'd do it, of course. She was definitely going to get out of this.

But she wasn't going to miss out on fucking her brother from flaccid.

And then, if she enjoyed it, maybe one or two more times after that.

She smiled back up at her mother, feeling the warmth of her brother's creampie filling her belly. If he was any kind of virile, he had just planted his baby inside of her.

Maybe the rickety old bed in the double-wide wasn't so bad after all.