85
it means shut the fuck up used online when you want someone to stop talking
by pyrokilla February 27, 2008
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86
Used to mean Shut the "F" up, also means Step the "F" up.
"If you think you are man enough, then STFU and prove it".(Reference to the phrase, "Cowboy up"). Of course both phrases are commonly used together.
"If you think you are man enough, then STFU (Step The "F" Up) and prove it, otherwise STFU (Shut The "F" Up) and sit your ass down".
by Cable Kenn February 24, 2006
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87
John Cena's other finisher, used to cause HHH and Shawn Michaels to tap out at the last two Wrestlemanias.
The STFU is one of the weakest-looking submission maneuvers in wrestling.
by Robert M. Glory August 26, 2007
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88
Shut the fuck up
to tell someone to be wuiet using profanity.
Mainly abbreviated in AIM, other chatting, and nerdy-ass, MMORPG computer games such as WoW or EverQuest
Guy 1: STFU n00b
Guy 2: I got tolded in tha hezay
by Zoso_maniac February 17, 2007
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89
"I'm out to get busy!"

"Well start the funk up!"
by misterchill March 16, 2004
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90
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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91
A: Read the article. It's no joke.

B: STFU you liar.
by The Return of Light Joker July 19, 2009
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