Similar to the term GG. Phrase that is used at the end of a match or as an insult to someone who has preformed an incredibly stupid act. Means “Get Fucked Idiot”
GFI first appeared in the small East Melbourne suburb of Forest Hill. First used by young man, A. Kelly, or was it Rhett or Nick? Whatever! What I'm trying to say is one of those guys came up with the word or to be more accurate, abbreviation. It stands for Get Fucked Idiot!