The house was empty except for us, and that was exactly how we wanted it. Mom had called everyone home for the weekend with that look in her eye, the one that said she was done pretending. Dad was already in the living room with his cock out, stroking slow while he watched the rest of us come in.
Sis walked in first, 22 and built like she knew exactly what her body did to the rest of us. She dropped her bag, peeled off her top, and went straight to Dad. "Been thinking about this all week," she said, then dropped to her knees and swallowed him down without another word. Her throat worked loud and wet while Dad groaned and grabbed her hair.
Mom came out of the kitchen naked, tits heavy, pussy already shiny. She looked at me and my brother and smiled. "Strip. Both of you. You're not sitting this out."
I yanked my clothes off fast. My cock was rock hard before my boxers hit the floor. My brother was the same, thick and already leaking. Mom pushed us both onto the couch and took turns sucking us, sloppy and loud, spit running down her chin while she jerked the one she wasn't blowing.
Sis stood up, wiped her mouth, and climbed onto Dad's lap. She sank down on his cock in one smooth move, moaning like a whore. "Fuck, Dad, your dick feels so good stretching me." She started riding him hard, tits bouncing, while Mom kept working us with her mouth and hands.
"Switch," Mom ordered after a minute. She pulled Sis off Dad and took her place, riding him reverse so we could all watch her ass slap down on him. Sis crawled over to me and my brother, grabbed both our cocks, and started jerking us together. "Who wants to fuck their sister first?" she asked, grinning dirty.
I pulled her onto my lap and shoved inside her. She was soaked, tight, and she rode me just as hard as she'd ridden Dad. My brother got behind her and worked two fingers into her ass while she bounced. "Yeah, stretch that hole," she panted. "I want both of you in me at once."
Mom climbed off Dad and pushed him toward the action. "Your turn with our daughter," she told him. Dad lined up behind Sis and pushed into her ass while I stayed buried in her pussy. She screamed and came hard, shaking between us while we double-fucked her.
Mom wasn't left out. She straddled my brother's face and ground on his tongue while she watched the rest of us. "That's it, eat Mommy's cunt while your brother and sister get used." She came quick and loud, then slid down to take his cock in her mouth again, cleaning off the taste of her own pussy.
We switched around for hours. I fucked Mom's ass while she ate Sis's pussy. Dad took turns on both of them, filling them up until cum leaked down their thighs. My brother and I spit-roasted Sis, then switched ends. Mom made us all watch while she licked every drop out of her daughter's holes, then begged for the same treatment.
By the time we were done, everyone was covered in sweat and cum. Sis lay on the floor with her legs spread, pussy and ass both dripping. Mom knelt between them and licked her clean while Dad and my brother watched, already getting hard again.
"Same time next weekend?" Mom asked, voice hoarse from moaning.
We all answered at once. Yes.
