Acronym for shut the fuck up. Commonly used by bad-ass kids on sites that filter inappropriate language, such as Club Penguin, Pandanda, Runescape and Stardoll.
Also incorporated by lazy typers who can't be bothered to find the hut he uck p on the keyboard.
Kid: "I like Highschool Musical :)"
Bad-ass kid: "Dude, stfu. No-one gives."
de jill04 21 mars 2012
Shave the furious Unicorn
Bill: STFU!

Jill: WHAT?!

Bill: *points to an angry unicorn* Shave it. It's furious
de MusicEmo 14 juin 2010
Comes From Shut The Fuck Up
Guy 1: Why are you being a pussy today?
Guy 2: STFU!
de Andrew Mister 18 février 2008
Speak the fuck up
Johnny please stfu and let your opinion be known
de Little Bobby Tables! 2 avril 2013
One would say it while losing an argument or after being insulted; usually used by french speaking canadians.

ESTI FUCK YOU
Person 1: You're lame

Person 2: STFU
de oqk 12 janvier 2011
share the funny umbrella.
can you please just STFU!
de sha_ika 21 avril 2011
shut the fuck up
boi 1:what does stfu mean.
Boi 2: Shut the fuck up
Boi1: why?
BOI2:JUST STFU
de TmacZILLA 2 novembre 2009
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