“I think my little sister is turning into a big slut.”

We were lying on her bed at her parent’s house drinking stolen bottles of champagne.  Both of us were wearing her ex-boyfriend’s boxers and nothing else, but it had been days since we fucked.

“Did she fuck everyone last night?” I tried to sound casual but my heart was racing as I said it.

Kelly rolled onto her back and sucked the empty bottle between her lips. I stared at her mostly naked body and felt my cock twitch. I didn’t close my eyes.

“She fucked someone,” she said, putting the bottle back down and looking around the room for another. “I heard her in the bathroom when everyone else was up on the roof. She kept saying fuck me, daddy, over and over again. It was totally fucked up.”

“Who was it?” I asked, my hand on her stomach, running along the elastic of her shorts.

“I don’t fucking know. Some creep I’m sure. It’s just gross. I mean, who says that?” When my fingers got too daring she slapped my hand away before standing up and opening the last bottle. I lay there looking at her and shook my head. She turned and took a long sip, not even looking at me. Fuck it. I closed my eyes and remembered.

The bathroom was dark, but she knew who I was. I kissed her and undressed her at the same time and she asked me over and over again how long I’ve wanted her. Her cunt was smooth and tight, and she wrapped her fingers around me, pulling me towards her with a groan of need I hadn’t heard in months. Before we could think too much at all I bent her over the sink and I was inside her. She pushed back to me, and the words poured from her mouth. Over and over again she moaned them as I fucked her cunt.

When I came she wouldn’t let me go until I knelt on the floor in front of her and licked her clean.

“What the fuck are you thinking about?” Kelly asked, sitting back down on the bed.

“Nothing,” I said, rolling over to my stomach. “Just, nothing.”