The house was quiet except for the wet sounds coming from the laptop on the kitchen table. Mark, twenty-three and home from college for the summer, stood frozen in the doorway watching his older sister Lisa hunched over the screen. She was twenty-five, wearing nothing but one of his old t-shirts, and her hand was buried between her thighs, fingers working fast. The video title glowed in big letters: Family Sex Stories Porn – Real Siblings Caught.
"Fuck, Lisa," he said, voice low and rough. She didn't stop. Instead she looked up, eyes glassy, and spread her legs wider so he could see everything.
"Get over here," she said. "Mom and Dad are gone till tomorrow. Watch this with me."
He crossed the room in three steps, already hard. The porn showed a guy his age pounding into a girl who looked just like Lisa while an older woman watched and touched herself. Lisa pulled the shirt off, tits bouncing free, nipples tight. She grabbed his belt and yanked it open.
"Pull it out," she ordered. "I want to see what my little brother is packing."
Mark shoved his jeans down. His cock sprang up thick and heavy. Lisa wrapped her hand around it and stroked once, slow and tight, thumb sliding over the head.
"Shit, that's nice," she muttered. She leaned in and licked a stripe up the shaft, then sucked the head into her mouth with a wet pop. Mark groaned and grabbed her hair, pushing deeper until her throat squeezed him.
On the screen the sister was now riding the brother reverse, moaning about how wrong it felt and how good his cock was. Lisa pulled off Mark's dick with a string of spit and climbed onto the table, ass up, face down toward the laptop.
"Fuck me like that," she said, reaching back to spread herself. "Right now."
Mark lined up and shoved in. She was soaked, tight around him, and he started pounding immediately, hips slapping loud against her ass. Lisa moaned into the table, eyes locked on the porn.
"Harder," she gasped. "Call me your dirty sister."
"You're my fucking sister," he growled, slamming deeper. "Taking your brother's cock like a slut."
She came fast, cunt pulsing around him, but he didn't stop. He pulled out, flipped her onto her back, and shoved back in, watching her tits bounce with every thrust. They kept the porn running, the sounds mixing with their own grunts and the wet slap of skin.
They didn't hear the front door. Their mother, forty-eight and still in her work clothes, stepped into the kitchen and stopped dead. For a second nobody moved. Then she set down her purse and walked over, unbuttoning her blouse.
"I knew you two would find that tape," she said, voice calm but eyes dark.
She shrugged off the shirt, revealing a lacy bra barely containing her heavy tits. "Your father and I made it years ago."
Lisa stayed on the table, Mark still buried inside her. Their mom came closer, reached out, and cupped Mark's balls.
"Keep going," she told him. "Show me how you fuck your sister."
Mark started thrusting again, slower now, while his mother stripped the rest of the way and climbed onto the table beside Lisa. She kissed her daughter deep, tongues sliding, then moved down to suck on Lisa's nipple. Mark watched, fucking harder, the sight pushing him close.
When he pulled out, his mom took him into her mouth without hesitation, sucking him clean of Lisa's juices. She pulled off and guided him back into her daughter.
"Fill her up," she said. "Then you're doing me."
Mark lasted three more hard thrusts before he came, groaning as he pumped Lisa full. His mom licked the overflow from her daughter's pussy, then pushed Mark onto a chair and straddled him, sinking down on his still-hard cock.
The three of them moved together for hours, switching positions, the porn looping in the background. Lisa rode her brother's face while their mother bounced on his cock. Mark took turns fucking both of them from behind, hands gripping hips, calling them every filthy name that fit. When he came again it was inside his mother, and Lisa cleaned him with her tongue while their mom fingered her to another shaking orgasm.
By the time the sun came up they were sprawled across the kitchen, sticky and spent. The laptop screen had gone dark, but the title still lingered in Mark's head. Family sex stories porn had just become their new reality, and none of them planned to stop.
