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1.
a way to say stfu while talking with people
HEY STAFU YOU STUPID BiTCH
by Jack February 17, 2005
 
2.
Abbreviation of Shut the Actual Fuck Up.
(It has been a long night. Peter has been snoring all night and Joy can't take it anymore)

Peter: *Gorilla snore*

Joy: STAFU
by shitguys!shit September 24, 2011