My biggest fantasy for pee?
I'd say getting a chance to piss in public with someone, or multiple people. I'd want to be out with a significant other or a group of friends, tell them I gotta piss, and then one (or in the case of the group several) of them says, "Really Pratum? Well I need to pee too, so make room!" Then, after that, pants get unbuttoned/pulled down or skirts lifted, and I just let it loose with whoever has joined me. Watching their pee stream(s) and mine as they splash against whatever it is would be super hot, especially if relief was clearly signaled through sighs and/or