A couple of weeks ago my mom asked me to take my sister to the pool. She's eleven and OK to swim on her own, but, mom wanted to make sure she got there ok, so I had to do it. I thought, what the heck, I'd go in too and check out the babes and maybe soak in the hot tub.
After we paid, the guy at the front desk said 'You can use the family change rooms, they're over there.' I was not sure what they were but we followed the instructions. When we got there, it became apparent that we were to both use the same change room.
I asked Karen if she was fine with this and she said 'I guess so.' So in we went. Hmmm, I thought, I have to act like it's no big deal getting undressed and seeing my skinny kid sister. So I started. She followed soon after. I'm not big (about two inches flacid and six inches erect), but I made sure Karen saw my dick (and she stared at it). I quickly showered to throw cold water on it. But, when Karen dropped her panties and took off the sweater I just about came! She had some pubic hair (my turn to stare) and was getting breasts. Not big (just pointy cones with nipples at the end) I would guess they stuck out maybe two inches) but I was getting to see them!!! When she finished we went out and we did our separate things in the pool.
When it was time to go, I got to see her naked again! This time her pubic hair was wet and I saw her slit (well, sort of). After we changed I asked her if she had a good time and she said YES and wanted to go again with me. She said the change room did not bother her and she had wanted to see a mans thing for a while.
When I got home I ran up to my room and masturbated (like I am now) and have done it several times a day since, always focusing on the vision of her tiny tits and slit!