the acronym of what you say to someone who spells this out in a real life conversation and other overused acronyms like wtf rather than saying the real thing
fag: stfu (spells out stfu) I only kiss that other guy cause uh..it's my religion so wtf (spells out wtf) you talking about I'm not gay.

me: No YOU shut the fuck up you don't even know proper english AND you kissed a guy, fag.
by nub_sauce February 23, 2007
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Some dumbass comback a retarded kid uses when someone roasts them.
Person 1: Hey dude! Ur mom gay!
Person 2: stfu
by Vorcee August 23, 2019
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abbreviation for "shut the fuck up" used when your mad at someone, their annoying, or they're talking shit
guy 1: wow your so stupid and blah blah blah
guy 2: omg just stfu
by jdcblajdbaiduch January 18, 2015
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(noun); shut the fuck up Used commonly in westlake village as StooFoo, which is created by Matt Cornelison
Girl: omgggg yourrr sooo hott
Matt: stfu, (said, stoofoo)
by jamiedance94 April 11, 2010
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