The house was quiet except for the wet sounds coming from the living room. Jake stood in the doorway, cock already hard in his jeans, watching his mom on her knees sucking his sister's pussy like she was starving for it.
"Damn, Mom, you eat that cunt good," he said, voice low and rough.
His mom, Linda, pulled back just enough to smirk up at him, her lips shiny with his sister's juices. "Get over here, baby. Your sis needs that dick while I keep licking."
Nikki, his nineteen-year-old sister, was spread out on the couch, legs wide, tits bouncing as she ground against their mom's tongue. "Fuck yeah, Jake. Come fill me up. Mom's been teasing me all night."
Jake stripped fast, his thick cock springing free. He stepped behind his mom first, yanking her ass up so she stayed on all fours eating Nikki. He slammed into Linda's soaked pussy in one thrust, making her moan right into her daughter's slit.
"Shit, Mom, you're dripping," he growled, pounding her hard. Her ass rippled with every slap of his hips. Nikki reached down and grabbed her mom's hair, holding her face tight against her clit.
"Keep sucking, Mom. Make me come while brother fucks you."
Linda moaned louder, tongue flicking fast over Nikki's swollen clit. Jake pulled out of his mom and moved around to his sister. He shoved his cock straight into Nikki's tight cunt, still slick from their mom's mouth. Nikki cried out, back arching.
"Fuck, that's deep! Pound me, Jake."
He did, gripping her thighs and driving in balls-deep. Linda crawled up beside them, sucking on Nikki's nipples while her fingers rubbed her own clit. "That's it, fuck your sister. She loves that big cock."
Nikki came first, legs shaking, pussy clenching around Jake's dick. He pulled out and fed his cock to his mom, letting her taste both of them. Linda sucked him sloppy, drooling down his shaft.
"Switch," Nikki panted. "I want to watch you fuck Mom again."
They moved to the floor. Linda got on her back, legs spread wide. Jake slid back into her, fucking her slow and deep while Nikki straddled her face. Linda licked her daughter's pussy again, moaning around it as Jake hammered her.

Nikki leaned forward and kissed her brother hard, tongues messy. "Come in her, Jake. Fill Mom's cunt so I can lick it out."
That did it. Jake buried himself to the hilt and unloaded, pumping thick ropes into his mom's pussy. When he pulled out, Nikki dove down, spreading Linda's legs and sucking the cum from her. Linda came hard, thighs clamping around her daughter's head.
They weren't done. Nikki pushed Jake onto his back and climbed on, riding him reverse so Linda could lick both of them at once. Her tongue dragged over his balls and up to Nikki's stretched pussy.
"Dirty fucking family," Jake grunted, thrusting up into his sister.
Nikki bounced faster. "Were just getting started. Moms turn to sit on your face while I ride."
The night stretched on with them switching positions, fucking raw and loud, cum swapping between mouths and holes until they were all wrecked and satisfied on the living room floor.