I’d been jerking off to thoughts of my sister for years, but nothing prepared me for the night she finally caught me. We were both home from college, adults now, no parents around, just the two of us in the old house. I was in the living room, cock in hand, stroking slow and hard while I replayed the way her tits looked in that tiny bikini last summer. Then the door opened and there she was, staring right at my thick shaft.
“Fuck, don’t stop,” she said, voice low and dirty. She locked the door behind her and walked over, dropping to her knees without another word. Her hand wrapped around my cock, replacing mine, and she gave it a firm squeeze. “You’ve been thinking about your sister’s mouth, haven’t you?”
I groaned and nodded. She leaned in and licked the head, tasting the precum that was already leaking. “Tell me,” she demanded.
“I want to fuck my sister,” I said, raw and direct. “I want to bury this cock in your tight pussy and fill you up.”
She moaned around me as she took me deep, sucking hard and sloppy. Her tongue worked the underside while she bobbed, spit running down my balls. I grabbed her hair and fucked her mouth, hips snapping forward. She gagged but didn’t pull back, eyes watering as she took every inch.
When she came up for air she stood, stripped fast, and climbed onto my lap.
Her pussy was soaked, lips puffy and ready. She rubbed her clit against my cock a few times, then sank down in one smooth motion. We both cursed at how good it felt—tight, hot, wrong in the best way.
She rode me hard, tits bouncing, ass slapping against my thighs. “Deeper,” she begged. “Fuck your sister deeper.” I thrust up to meet her, hands on her hips, driving into that wet cunt until she clenched and came, juices dripping down my shaft.
I flipped her onto her back on the couch and pounded her, legs over my shoulders so I could watch my cock disappear inside her. She reached down and rubbed her clit while I fucked her, moaning filthy encouragement. “Come inside me. Fill your sister’s pussy.”
I did, growling as I unloaded, pumping rope after rope of cum deep into her. She milked me with her walls, taking every drop. We stayed locked together afterward, breathing hard, already knowing this was only the start.
Later that night she woke me up with her mouth again, and by morning we’d tried every position we could think of—her riding reverse so I could watch her ass, me taking her from behind while I pulled her hair, even her sitting on my face while she sucked me off. We didn’t stop until we were both sore and satisfied, the taboo thrill only making it hotter. From then on, any time we were alone, we fucked like it was the most natural thing in the world.
