To do something so horrible, that people are shocked and offended just hearing about it. For example lying about being shot to your friends just to gain sympathy or beating up your girlfriend.
Person 1: "Did you hear about that guy that gave his girlfriend two black eyes?"
Person 2: "Bruh, that's really buster!"
Person 2: "Bruh, that's really buster!"
by Boomerang102 December 18, 2018
Get the bustermug. One who acts in a pejorative, disparaging, or obstructionist manner; one who acts difficult for no reason
by Johnny Driggs August 24, 2005
Get the bustermug. by biggy d September 18, 2005
Get the bustermug. by vickicat July 10, 2006
Get the bustermug. by Ranmoth July 15, 2008
Get the bustermug. by El _Matto February 15, 2015
Get the bustermug. The red circle with the diagonal line through it indicating that something is prohibited. Named after the Ghostbusters logo.
by Nyahhh March 31, 2009
Get the bustermug.