This story happened when I was about 12.
We had gone over to my cousin's house to visit. My cousin, Rene, and I were really close when we were young. She was a year younger than me, 11. It was always just the two of us when we played.
But that day my little brother kept bugging us and kept following us around. So we ran away and hid from him. We ran into the downstairs bathroom, closed the door and hid behind the shower curtain. As we were waiting to see if he would find us, I told Rene that I needed to pee. She too, said that she needed to go pee. But we didn't want to go out or he would find us, so we just tried to hold it in.
Finally, I told her I couldn't hold it any more and got out of the bathtub, lowered my shorts and began to pee. Rene said she couldn't believe I was peeing with her in there. I told her I couldn't help it, but she just watched as I peed. When I finished, I realized that I had a hard-on from her watching me.
She then said that she had to go. But she told me to go back behind the curtain cuz she didn't want me to see her pee. I told her: no way. She got to watch me, now it was my turn to watch her.
She tried to argue with me but gave up cuz she couldn't hold it any more. She finally pulled her shorts and panties down past her knees and sat down on the bowl and began peeing. This was the first time I got to see a girl's pussy. She had little sprouts of black hair growing.
I just kept watching the stream coming out of her pussy. As I watched, I started to rub my cock. She saw me do this and asked what I was doing. I told her that I was playing with myself cuz I was getting excited watching her pee.
When she finished, she just sat there and watched me. After a few minutes, I started to cum into my hand. She started to laugh and asked me what had happened. I told her that I had cum and it happens every time I play with myself.
I cleaned up and we put our clothes back on and went out to watch TV. My little brother had given up trying to find us cuz he was sitting there watching the TV, too.
After that day, things changed between me and Rene. We had a lot more fun when we visited each other... but those are other stories to tell!!!