This one is a little different. I was 12 years old and behind me lived 2 sisters. Kathy (13) and Tina (14). We had a privacy fence and cyclone fence that separated our yards with about 3 feet of clearance separating the 2. The girls called me so I went in between the fences to see what they wanted. When I got there the older one whipped off her top and and I saw my first pair of boobs. I was so scared that I ran out from between the fences, up the driveway through the side door to my house and up the stairs to my grandmas room and turned on the TV to try to get the mental images from out of my head. Here I was watching puff and stuff thinking about what I just had seen. Eventually I realized I liked what I had seen but was too embarrassed to face those girls for a while knowing that they were intentionally trying to scare me and it worked.