When I was 15, my 4 year old cousin stayed the night. She was asleep on a mattress on the floor. I was sitting on the other side of the room, jerking off to porn. I kept looking frequently to make sure she wasn't awake. Eventually I looked up and she was on her stomach, halfway off the bed, with her nightgown slid up. I saw her panties, they were riding up showing her ass cheeks. Horny as fuck, I got a horrible idea. I went over to her and got on my knees behind her. I leaned down and kissed her ass through panties. She didn't wake.

I pulled her panties down and kissed it bare, again didn't wake. I said fuck it and I spread her ass cheeks and licked her little asshole. Still not awake, so I buried my face in her ass and began eating as I rubbed my cock. She tasted so good. I wanted to fuck her but figured she was too small so I got to my knees and wedged my cock between her spit covered ass cheeks and began rubbing it up and down the length of her soft ass crack.

Eventually I couldn't take it anymore. I spit in my hand and rubbed it on my cock. I held her cheeks open and angled it down, pressing it against her asshole. I slowly pushed forward and to my surprise it sunk in. I pushed until I was about 3 inches deep. I was in euphoria. I began thrusting those three inches in and out. This she woke up for. I heard whining and grunting, so I asked what was wrong and she said it hurt. I asked if I was too big and she said it hurts. I told her I was almost done and asked to finish and she agreed. So I held her waist and thrusted over and over until I came inside her tight little ass. Best. Orgasm. Ever.