I love to pee (and #2) in abandoned buildings, there is something extra rude about it!
Anyway to answer the original question, my naughty pee fetish started at an early age. I lived on a small close with 2 girls on one side and a girl on the other side, and a couple of boys in the end house. When we were playing out, we would go behind the garage of the boys house to pee, and the boys would pee but the girls only watched.
There was a grass field next to the houses and when the grass was cut we would make a house of sorts with the grass cuttings, and the house always had a toilet, and