When I was 5, I was sent to a Boys and Girls Club for my swimming lessons. While swimming underwater in a crowded pool, some grabbed my p**** and really had a go at it--it seemed like a strange sensation indeed and I swam to the side and got out. Didn't feel traumatized and really wasn't that sexual until middle school. Though in third grade, there was a boy, we liked each other platonically because we were very competitive on a daily basis in school (the top students in class trying to outdo each other-ie who can finish their test first, read the most books, etc.). I would ride my bike way across my neighborhood without my mom's knowledge. At his house, we would take turns tying each other with a rope and seeing if we could escape each others various creative ways of tying each other up. It didn't feel sexual, but it did feel exciting. I think we shared a lot of excitement together--whether he tyed me up or I was working as fast as I could to finish my assignment before he did--he made my adrenaline surge in a way that felt great!