Piss villain is the type of guy you would see on the streets, he'd be going around giving out gamer girl bath water and ruining people's days. He'd also yell "piss off" to old people in a very exaggerated British accent.
Person 1#: oh my god have you heard about piss villain???
Person 2#: please don't talk about them they yelled at my nan for asking them to walk the fish.