I never planned on fucking my sister. It just happened one sticky summer night when our parents were out of town and the house was ours. We were both home from college, bored, drinking cheap beer on the back porch. Jenna was twenty-one, all long legs and tight ass in those little shorts she always wore around the house. I was twenty-three and horny as hell after months without a steady girl.
She caught me staring at her tits while she stretched. "What the fuck are you looking at, perv?" she said, but she was smiling that dirty little smile she gets when she's feeling bold.
"Your tits," I told her straight. No point lying.
"They look good in that tank top."
Jenna laughed, but she didn't cover up. Instead she leaned forward, letting me see right down her shirt. "You want to touch them?"
I didn't answer with words. I reached over, grabbed one, and squeezed. Her nipple was already hard. She moaned low in her throat and pushed into my hand. That was all it took. We were on each other in seconds, tongues fighting, hands grabbing whatever we could reach. I yanked her top off and sucked her tits while she fumbled with my belt. Her hand wrapped around my cock the second it was free, stroking it hard and fast.
"Fuck, you're big," she breathed. "Bigger than I remember from when we were kids spying on each other."
We didn't waste time with the porch. I dragged her inside to the living room couch. She stripped the rest of the way while I kicked off my jeans. Jenna dropped to her knees and took my cock in her mouth like she'd been waiting years to do it. She sucked sloppy and deep, gagging herself on purpose, spit running down her chin onto her tits. I held her head and fucked her face until I was close, then pulled out.
"Turn around," I told her. She bent over the couch arm, ass up, and spread her legs. Her pussy was shaved smooth and already dripping. I slammed into her in one thrust. She was tight and hot, gripping me like she didn't want to let go. We fucked hard and nasty right there, skin slapping, her moaning loud enough for the neighbors to hear. I called her my slut sister and she begged for it deeper.
We moved to her bedroom after the first round. I ate her out until she came on my face, then flipped her over and took her ass while she fingered her clit. She loved it dirty. By the time we passed out, we'd fucked in the shower, on the kitchen counter, and back in her bed again. Cum was leaking out of her in multiple places and neither of us cared.
The next morning we didn't talk about stopping. We just kept going. Real incest doesn't need excuses. It just needs two people who want it and a locked door. We spent the rest of the week using each other every way we could think of, and when our parents came home we acted normal. But every chance we got after that, we found a way to sneak off and fuck like the dirty siblings we were. No guilt, just raw need.
