A fetish when somebody enjoys being watched at the urinal by girls or finds it hot when girls go near urinals.
Anything sexually done at the urinal by the girl is also classed as a urinal fetish.
Guy 1: That girl went into the guys room... she must have stood near a urinal, that's naughty but hot!
Guy 2: Do you have a urinal fetish or something?
Guy 1: I guess so! It's hot when chicks go near them... but even hotter if they pee in them or at least pretend!