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This acronym stands for "Go Die In A Rotten Ditch". It is doubly hilarious because it is a grammar travesty and suggests dying in a strange fashion. It is pronounced "guh-DEEard". This word is used mainly as a verb, more specifically, a diatribe.
gdiard, mom!

Man, you're so stupid. I wish you'd gdiard.
by Alvan September 12, 2006
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