by GUMPH June 14, 2003
Obscence or without meaning; sometimes means an undefined swearword, making it possible to swear like hell at people who have no idea what the gumf you're saying. I'm not gonna put an example here because I already have ya lazy gumf.
by Volvo_Man January 6, 2004
by Cockfat December 24, 2017
An acronym for the phrase, Goofy Ugly Mother Fucker. The word is used when it would be innapropriate to say, "Goofy, Ugly, Mother Fucker" aloud.
Dave: "Oh my god, look at that GUMF over there!"
Chris:"Shit's hurtin' my eyes! Lets get out of here!"
Chris:"Shit's hurtin' my eyes! Lets get out of here!"
by DarthSlymer July 13, 2011