mug is an insult which is related to someones actions. E.g if someone kicks you in the balls they are a mug because of that action.
by arnold beefenburger May 25, 2004
by hjpotter92 February 20, 2011
Geeeze MUG your such a fucking douche bag.
by troy blausey August 27, 2008
The dated definition of the word is someone who is unpleasant or unnatractive.
Can also be used to describe people who are dim-witted, lazy or generally losers.
Can also be used to describe people who are dim-witted, lazy or generally losers.
by George April 03, 2004
Mug = Idiot, jerk, thug, dim-witted person, somebody who is stoned 24/7, poser, somebody who acts like a "tough guy" but doesnt know his arse from his elbow.
by Kent Paul October 31, 2004
A slang for a person, whom seems to have a shady character, that most likely has a mugshot out there somewhere, from a prior arrest.
"I don't trust that guy, he's a mug!"
"I don't trust that guy, he's a mug!"
by dusty dawn January 08, 2014