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
