I slammed my cock into my sister's fat ass first, her big booty cheeks clapping loud as I fucked her doggy style on the living room floor. "Fuck yes, big brother, wreck this booty," she moaned, pushing back hard. Mama watched from the couch, her own massive ass spread wide while she fingered herself, juices dripping down her thick thighs.
"Don't you dare cum yet, baby. Save some for your mama's big booty too."
Auntie walked in next, her huge rear swaying in tight shorts she immediately yanked down. "Room for one more big booty slut?" she laughed, dropping to her knees and sucking my balls while I kept pounding my sister. Grandma came last, the oldest but still packing the biggest, roundest ass in the family, her nightgown hiked up to show wrinkled but juicy cheeks. "Grandma's turn soon, boy. Been waiting all week for that dick in my big booty."
We moved to the big bed, bodies tangled. I pulled out of my sister and slid straight into Mama's dripping cunt from behind, her big booty rippling with every thrust. "That's it, fuck your mama deep," she growled, reaching back to spread herself wider. Auntie climbed on Mama's face, grinding her own fat ass down while Grandma sucked my nipples and stroked my shaft whenever it slipped out. The room stank of sweat and pussy, everyone moaning like animals.
Switching fast, I buried myself in Auntie's tight asshole next, her big booty bouncing as she begged for more. "Harder, nephew, split this big booty open." Sister and Mama made out sloppy, fingering each other while they watched. Grandma got on all fours beside them, wiggling her enormous rear. "Come on, grandson, give grandma that load in her big booty." I pulled out, slammed into Grandma's ass, and fucked her slow and nasty at first, then faster, her cheeks shaking like jelly.
We kept rotating, every big booty getting pounded in turn. Sister rode me reverse cowgirl, her fat ass swallowing my cock whole. Mama sat on my face so I could tongue her asshole while Auntie sucked me clean between holes. Grandma jerked me off onto her big booty then made everyone lick it up. Cum flew everywhere—on asses, in mouths, down thighs—as we fucked through the night, switching positions, no one stopping until every hole was used and every big booty was marked.
By morning we were all wrecked and sticky, but already planning the next round.
