That would get my mind flowing. Up until then I had never even done anything sexual with my cock. After looking at my brother do that for months I started to jack off. It got me so excited. My next experience would be when I was 18. I was working at an electronics retail store. I have had girlfriends since but nothing got my cock harder than watching my brother have sex with his friend on the weekends. Nobody had said anything about men having sex with men being out of the ordinary so I assumed that it was totally normal.