The moment we stepped onto the private beach, Mom stripped first. Her big tits bounced free as she kicked off her sundress, nipples already stiff in the ocean breeze. Dad followed, his thick cock hanging heavy between his legs, half-hard from the sight of her shaved cunt. Then my sister Lisa peeled off her bikini, her tight ass and smooth pussy on full display, the same way she'd looked the night before when she'd sucked my cock in the hotel room.
We were all adults, all over twenty-five, and this wasn't our first time getting naked together. The resort was clothing-optional by design, but our family didn't bother with optional. We lived nude when we traveled like this, and the rules we broke were the ones that made our pussies wet and our cocks throb.
Lisa grabbed my hand and pulled me toward the water. "Come on, big brother. Let's get that dick hard before Mom claims it." She dropped to her knees right there in the surf, water lapping at her thighs, and swallowed my cock in one wet gulp. Her tongue swirled around the head while she pumped the shaft with both hands, spit dripping down to my balls.
Dad watched from the blanket, stroking himself slowly. "Fuck her face, son. She loves choking on family cock." Mom crawled over to him on all fours, her heavy tits swinging, and took his dick into her mouth with a loud slurp. The wet sounds mixed with the waves as she bobbed, gagging herself on purpose so strings of saliva ran down his shaft.
Lisa pulled off my cock with a pop and turned around, presenting her ass. "Fuck me right here. I want them to watch." I slammed into her tight cunt in one thrust, her walls gripping me like a fist. She moaned loud enough for the whole beach to hear. "Harder, brother. Pound that incest pussy."
I gripped her hips and drove into her, balls slapping against her clit with every stroke. Water splashed around us. Her asshole winked at me with each thrust, and I spat on it, working a thumb inside while I fucked her cunt raw. Lisa pushed back, meeting every stroke. "Yes, use me. Fill your sister's hole."
Mom pulled off Dad's cock and came over, tits glistening with sweat. She knelt beside us and licked my balls while I fucked Lisa. "That's it, baby. Fuck her good. Then you can have Mommy's cunt next." She sucked one of my balls into her mouth, humming, and the vibration made my cock twitch inside Lisa's pussy.
Lisa came first, her cunt spasming and squirting around my shaft. She screamed my name, body shaking. I didn't stop. I kept pounding until I felt my own load boiling up. I pulled out at the last second and painted her ass cheeks with thick ropes of cum, some landing on Mom's face as she leaned in to lick it off.
Dad stood up, cock rock-hard and dripping. "My turn with your sister." He pushed Lisa onto her back in the sand and mounted her, driving his bigger cock into the same hole I'd just used. Mom straddled Lisa's face, lowering her dripping pussy onto her daughter's tongue. "Eat Mommy while Daddy fucks you."
The sight of my father railing my sister while my mother ground on her face made my cock stiffen again fast. I moved behind Mom, spread her ass, and shoved into her asshole without warning.
She grunted around a moan, pushing back onto me. "That's the spot, son. Wreck Mommy's ass."
We fucked like animals on the open beach. Dad's hips slapped against Lisa's thighs. Mom rode my cock in her ass while Lisa tongue-fucked her cunt. The sun beat down on our naked bodies, sweat mixing with cum and ocean water. Lisa came again, muffled under Mom's pussy. Dad followed, flooding her cunt with a loud groan.
I pulled out of Mom's ass and flipped her onto all fours. I rammed back into her pussy this time, pounding her from behind while Dad recovered and slid into Lisa's mouth to clean his cock. Mom's tits swung beneath her, slapping together. "Harder. Make it hurt. I want to feel this tomorrow."
When I came, I stayed buried deep, pumping my second load straight into her womb. Mom milked me with her cunt muscles until I was empty. We collapsed in a sweaty, sticky pile on the blanket, still naked, still touching.
Lisa reached over and stroked my softening cock. "Round three after lunch?" Mom laughed, licking cum from her fingers. Dad just grinned, already half-hard again at the thought.
The sun was still high. We had the whole week ahead of us.
