Definitions by X-Fi6

STFUOGTFO 

Stands for "Shut the fuck up or get the fuck out".

Also represented in "STFU or GTFO" or "STFU & GTFO".

Guy1: Hey, did you get Halo 3?
Noob: OMG liek Halo is for NERDZ
Guy2: Dude, STFUOGTFO...

STFUOGTFO by X-Fi6 November 6, 2007