When I was 16 yrs old , I came home from school I went into the house and heard a noise coming from upstairs. I heard some moaning and went up to see what was going on. I looked into my sisters bedroom door which was not closed all the way and saw her naked on her bed.She is 18yrs old. I instantly got a hard on seeing my wish come true. She was rubbing her breasts with one hand and inserting something into to her pussy with the other. She was really getting into it and I grabbed my cock and played with myself right there. She did not know I was right there.I was sooo horny and wanted to fuck her right then.I could hear the juices everytime the dildo was moving in and out of her.I really could not see if she was clean shaven or not,but It was something i'll never forget. Has anyone else experienced this ?