Short for Gretrieg i.e. the douchebag who ruined DragonRealms: The Fallen (a pvp server) by spending thousands and thousands of dollars to acquire dozens of high level characters with which to zerg his enemies; for he sucked mightily at pvp. Using this tactic he was successful at driving most veteran players from the game.
by lorekeeper April 6, 2007
Get the gretmug. Mispronunciation of the word great, used when talking to rednecks and other such dumb, non-speaking bastards.
by k_sadler July 13, 2004
Get the gretmug. you absolute gret
by mikecoxfallenoff March 19, 2020
Get the gretmug. by Patrick Dell'Arena September 27, 2007
Get the gretmug. 
