Sidepisser
A moron, who, at a urinal,pisses toward the side, thus is likely to piss on a) his leg or worse b) pissing on your leg.
"Dude your pantsleg is all wet."
"Yeah I was beside Irvin in the bathroom."
"Yeah he's a fuckin sidepisser."
Piss, urinate, pee
"Yeah I was beside Irvin in the bathroom."
"Yeah he's a fuckin sidepisser."
Piss, urinate, pee