Getting pissed on while sitting down to eat food (i.e.someone pissing on my top).
peeing while sitting on a chair, though clothes, or not. E.g.sitting in a cafe and just peeing and hearing it fall on the ground.
like others here, peeing on nice dry, clean carpet, or in a bed, is always an enticing thought.
watching someone pee in jeans.
being peed on while I play with myself.
watching someone piss on walls, furniture, books, etc.
a pee party, where you can freely piss on things, or other people.