Auntie grinding on the arm....

a few times I came home early from school, I never new why she was like ridding the arm chair of the couch on a towel, but it made my cock hard as rock, I never new how to wank, I was about 12, I remember my cock throbbing, I watched through the gap in the door till her eyes went into the back of her head, she shaking and cry out, about 2 or 3 times a month, she must of been horny, when I found out how to shoot my load, I would watch her and I would have a wank at the same time shooting my load on a beach towel, until one day I was watching her, she must of hear me wanking off, I was cumming when she got off the arm chair opened the door, I couldn't move I cumed on the beach towel in front of her, she told me to get to my room, i used to let her catch me wanking a lot, made sure when she caught me was shooting..