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.
you mug!, Jhonny's a right mug!
by arnold beefenburger May 25, 2004

by hjpotter92 March 6, 2011

Geeeze MUG your such a fucking douche bag.
by troy blausey October 16, 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 3, 2004

by McDaddie129 June 9, 2011

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
