When pissing outdoors and the perceived threat of an insect,
animal, or person makes you jump
back causing your piss to
fly everywhere, often times including on yourself.
(
Joe returns to the car stopped on the side of the highway.)
Mark: Oh man, d'you piss all over your shorts?!?
Joe: Ugh.. no.
Mark: Did a deer startle you while you took a leak or what?
Joe: No, uhm, a butterfly.
Mark: Dude, you're such a pisshopper!