I guess a little about myself would be in order. I've been "curious" about seeing girls pee since I was very young, but I didn't associate my curiosity with any kind of sexual implications until I was 14. Bizarrely, one of the execution scenes in "Bangkok Hilton" (old TV serial from the early '90s) was the main catalyst for that.
My favourite situations are those where girls pee in unusual locations, and girls who can direct their pee forwards to pee in urinals, sinks, up walls, etc. I also love to see the fountains and arches produced when a girl lies on her back and pees straight upwards