The Excitement of Sharing
One day when I was around 12 years old I started playing with my self. I started to wonder if my sister masturbated so I would intentionally get "caught" by her when I knew she was entering the room. One time we were watching TV in the back room and we were sitting next to each other in the same blanket and I started to play with my self. She did not let on that she knew at the time but I think she did. Later that year I caught her in the act and from then on I loved to try to catch her. Eventually we started to play in the same room but we never touched each other. Still the excitement of masturbating next ot your sister is a great feeling.