Our Mom's an OF Star
Copyright© 2025 by Obscene Vices
Chapter 1: The Temptation
Incest Sex Story: Chapter 1: The Temptation - When Emma discovers her mom's OnlyFans, the shock quickly morphs into forbidden excitement - especially when Lily walks in. Their secret late-night viewing sessions grow hotter and more intimate... until Jason catches them in the act. Soon, all three siblings find themselves crossing lines they never imagined, awakening desires that will transform their family forever.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Ma Fa Mult Consensual Lesbian Heterosexual Fiction Incest Mother Brother Sister Group Sex Anal Sex Double Penetration Facial Oral Sex Voyeurism
Emma really hadn’t meant to find it.
She had only been looking for the tax return to send with her NYU Law school application. She had been asking Mom, who had forgotten to send it to her. With the deadline looming, she really needed it today. She had been texting Mom, who had gone for her monthly book club (really, Mom?), and had said to go to her laptop and take it from the folder ‘Tax Returns’. Mom was the one who did taxes since she had studied to be a CPA. However, now she was a part-time interior designer and wellness therapist and worked from the basement.
“Take it from the laptop. Should not have password,” texted Mom.
“Ugggh!” grunted Emma.
The house was empty when Emma went into her parents’ office. It was plush, carpeted, with wooden panels. Mom was the interior designer. The office had Dad’s big table where he worked, and with her mother’s table in the corner. Her mom’s laptop was open on the table. Her dad, Mark, was a corporate lawyer working as Chief Counsel at an IT firm headquartered in NYC but with a local office. Mom always worked from home, and Dad worked at home on Mondays and Fridays, though he did take more days to work from home, the normal post-COVID routine.
She opened the device (and as Mom said, no password) and immediately tapped into folders to see the tax returns. There it was! She opened the browser to email these to herself.
And then she saw it on one of the open tabs.
Open Tabs: OnlyFans - @Mrs.SinclairXXX
Emma froze.
Her mouse hovered over the tab, torn between horror and a deep, undeniable curiosity. Her mother, her own mother, was watching OnlyFans? Or did she have one herself? The woman who hosted school fundraisers and scolded Emma for wearing crop tops to school?
Before she could stop herself, she clicked on the tab
The page loaded with excruciating slowness.
And then, she saw.
Oh. My. God.
There she was.
Sarah Sinclair, splayed across a leather couch that Emma recognized from their basement rec room. Her mother’s body was shimmering under soft lighting, her deep red nails clutching the cushions as a thick, veiny cock was deep inside her. The video thumbnail was frozen on her mother’s face, smiling at the camera.
Then she clicked play.
“Fuck me harder for the camera, baby.”
The words filled the room and came from the speakers before Emma could stop them. Her mother’s voice, low, breathy, filthy. She tried to remember if she had ever heard her mom even cuss or say fuck. She couldn’t. And then the moan, she moaned so hard. Emma remembered hearing that when Mom and Dad were being gross at night.
Emma’s entire body went rigid. And hot.
She should have closed it. Should have shut down the browser. Should have pretended she never saw anything.
Instead, she turned the volume up a little, now curious to see Dad. And then the shock. That cock didn’t belong to Dad! It was a stranger! Mom was fucking someone else in our basement!
The video played in full, unforgiving detail. Her mother was looking at the camera as she got fucked in different positions, her throat was working around the cock that stretched her lips, her manicured fingers were kneading her own breasts. Emma couldn’t look away. Couldn’t breathe. Couldn’t believe. The video had her in a trance, like it was a magnet so strong she couldn’t look away even if she wanted to.
And then, worst of all, she realized she was wet.
She was aroused like never before, her thighs pressing together instinctively as her body reacted to the sight of her mother being used like a common whore.
No. not common.
Expert.
Because Sarah Sinclair didn’t just bear it. She owned it.
Emma unconsciously opened her jeans’ button and moved her right hand under the waistband of her panties. She was surprised the moment her fingers met her pussy to find how wet she was. She quickly withdrew and looked at her fingers, then put it back inside her panties.
“Oh my god, Mom...” she whispered, her thumb circling her clit and fingers entering her pussy, as she watched the unknown man on screen pull her mother’s hair, forcing her to look into the camera as he fucked her throat while she was on her knees and the man was standing.
She should have been disgusted.
Instead, she was transfixed.
And the stranger was cute. Younger, maybe her age.
Emma’s breath was ragged, her fingers stroking faster, her clit enlarged. She could barely recognize the sounds coming from her own mouth - whimpers creating an accompaniment to the sounds of her mother’s grunts on screen, as the sensory overload of sound, vision, and touch was becoming overwhelming.
When she came, it was with her mother’s moans still ringing in her ear, her back arching, her thighs clamping around her own hand, her entire body shuddering with pleasure she knew was wrong but couldn’t bring herself to regret.
The moment the haze cleared, Emma moved to change the tab, leaving traces of her ever being there.
She went back to her room and couldn’t take out that memory. It was burnt in her mind - her mother. She opened her laptop, opened OnlyFans, and subscribed immediately to her mother “@MrsSinclairXXX” - wow, she was using her real name - that was guts.
She watched a few more videos, her feelings ranging from disgust to thrill, and said to herself, “Enough!” and hovered her mouse on the Unsubscribe button.
But she didn’t delete her subscription. She couldn’t do it.
Emma’s fingers trembled as she held her iPad and scrolled through the shocking gallery and video of her mother’s OnlyFans content. The initial horror had transformed into something far more dangerous - a deep, primal arousal that was making her wetter with each new depraved image and video.
She played a video titled ‘Mommy Got Needs,’ and fast-forwarded to the middle of the video.
“Mmm ... right there, baby, stretch Mommy’s tight little pussy,” Sarah Sinclair moaned from the tablet screen, her body writhing beneath a well-hung youngster with a Jesus fish tattoo on his shoulder. Emma watched, entranced, as her mother - the same woman who baked apple pies for school functions - pulled her legs obscenely back to her ears in order to accommodate the stranger’s cock.
Without conscious thought, Emma’s own fingers slipped again beneath her cotton panties, feeling her own wetness and arousal. The sounds from the video seemed impossibly loud in her quiet bedroom as her fingers found her swollen clit.
“Oh fuck...” Emma whimpered, watching her mother’s breasts bounce with each thrust. “How ... how does she take it so deep?” she thought. She imagined that youngster cock in her and moaned at the thought as she saw her mom getting fucked.
She shut it for now.
Emma, 22, a recent college grad and a paralegal at a local law firm, found it difficult to concentrate on her LSAT prep. She wanted to do law like her father, Mark, who was a corporate lawyer and Chief Counsel at an IT firm. But now her mind kept drifting to her mom’s OnlyFans account.
For five agonizing nights, Emma had consumed every video with ravenous hunger. She’d watched her prim-and-proper mother do things that made her sheets so wet - taking two cocks at once, moaning with a mouthful of cum, screaming filth as strangers drew intricate patterns on her bare skin with ice cubes or Nutella or wine before licking them clean, women pleasing her, she pleasing women. It seemed no act was off the table, as long as she was doing it for the camera.
On the sixth night, disaster struck.
Emma’s finger hovered over the tablet screen and had just clicked the next video titled ‘Mommy Takes Two Black Cocks - Full DP Scene’ when her bedroom door burst open without warning. She barely had time to throw the comforter over her lap before Lily, her youngest sibling, and a high school senior, all of 18 years old (Eighteen years and 3 months as she tended to remind everyone) barged into the room.
“Em? I just wanted to grab your...” Lily’s words died mid-sentence as their mother’s distinctive voice emanated from the tablet speakers. The color drained from Lily’s face as her blue eyes focused on the screen where Sarah Sinclair was on her knee in the basement couch, her signature red nails around two massive black cocks, one in each hand, as she sucked them alternately.
“OhGod, OhGod, Close it!” Lily hissed, practically teleporting to the bed to press the off button at the side of the iPad. She stood trembling, her hands pressed over her mouth, sleepshirt hanging off one shoulder.
Emma watched as Lily’s chest rose and fell in rapid bursts - not with disgust, Emma realized, but with ... arousal? The way her sister’s nipples peaked visibly beneath her pajama shirt confirmed Emma’s suspicion. Lily wasn’t horrified. She was as fascinated as Emma was when she first saw this.
When Emma slowly reopened the iPad, Lily didn’t stop her. Instead, she crawled onto the bed, her knees brushing Emma’s beneath the covers. They sat shoulder-to-shoulder watching in stunned silence as Emma forwarded the video to show their petite mother take two massive black cocks simultaneously - one in her pussy while she deepthroated the other.
“Fuck Mommy’s nasty holes,” Sarah grunted on screen as the cock in her pussy thrusted in and out, her breasts moving obscenely. “I want to be your slut, boys!”
Lily made a choked sound. “She ... she’d kill us if she knew we...”
“She won’t.” Emma’s hand found Lily’s, holding it like they always held hands. Emma, always the elder sister, was guiding Lily’s hands beneath the comforter to press against her own damp panties. “Feel how wet I am, Lily. You know you are too.”
Lily whimpered but didn’t pull her hand away. Their fingers tangled together over Emma’s soaked cotton as they watched Sarah scream through an intense orgasm, her legs shaking around the thick cock fucking her.
The moment stretched between them, thick with tension, sisters not saying anything. It seemed Sarah’s orgasm had quietened the room. Then, Emma instinctively shimmied closer to Lily, their bodies pressed together. As they pressed closer, they could feel the heat between them as they took ragged breaths.
Emma then turned to face Lily and brought Lily’s face to face her. She searched for any hesitation or resistance in her sister’s eyes. Instead, she saw desire, lust, and acceptance. She leaned in closer for a kiss and wanted to do it slowly. But when their lips met, it was anything but delicate or tentative. It was a hungry, full-blooded, tongue-dueling kiss that took them by surprise. A good surprise. Lily moaned into the kiss, her tongue dueling with Emma’s like getting back with an ex, and not your own sister for the first time. The taste of her sister, spearmint toothpaste, and something uniquely Lily, sent electric currents straight to Emma’s core. She’d imagined a moment with a female a thousand times since discovering their mother’s videos with other women, but never dreamt it would be Lily, her younger sister. And the fact was that Lily kissed back with equal fervor, her hands rising up to get purchase in Emma’s hair to hold her closer.
They parted with a longing and looked at each other, looking at each other, where this leads now. They heard their mom groan on the screen as the men switched positions. The two sisters looked at each other again. Keeping her eyes peeled on Lily, Emma removed the comforter completely, exposing her pussy to her younger sister. Lily, hooked on to the view of Emma’s pussy, asked her elder sister, “Show me how you touch yourself when you watch Mom’s videos.”
The way Lily’s breath hitched would fuel Emma for weeks. Emma put her hands on her pussy, and masturbated, inserting one finger inside her slick folds and the thumb on her clit. With the other hand, she brought Lily’s hand to her pussy. With hesitant movements, Lily traced Emma’s swollen lips, copying the motions her sister was doing.
“O-Open wider,” Lily whispered. Emma did so. Lilly placed her hands on her exposed pussy, tentatively tracing it with two fingers. And when Lily’s thumb touched Emma’s clit, Emma let out something between a gasp and a moan...
“Yes! Just like ... oh, fuck ... just like Mom likes it!”
Lily shuddered violently at the comparison but didn’t stop. Her touch grew bolder, exploring Emma’s dripping entrance before replacing Emma’s fingers and pushing her two fingers inside.
Emma cried out, her hips bucking. “Oh God, Lily! Deeper!”
On screen, their mother came violently again, her pussy clenching around the cock pumping into her. The sight pushed Emma over the edge, her orgasm wracking her body as Lily fingered her through every pulsing wave.
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