Define Washroom Mafia Meaning

Washroom Mafia
When you go to the washroom and witness a gang of dudes docking, and then they anally invade you because you caught them.

Dude #1...*walking funny*
Dude #2: you ok? What happened?
Dude #1: I went to take a piss but was greeted by the washroom mafia.
By Melesa