STFU

a widely-used acronym for "shut the fuck up"

Have a nice cold glass of shut the fuck up!

by Phishr August 12, 2005

STFU

start the fun unicorns

dude, just stfu.

by sarahpenaliesss February 11, 2010

STFU

What you tell your boss when he asks the same damn question that you have answered at least 10 times that day!

read the damn memo and STFU Rob!

by The Angry Worker Ant April 14, 2009

STFU

St. Fu, Patron Saint of Ninjas

Before the Battle of Hu Lao Gate, Many Ninjas prayed to STFU for victory

by Lt. Handjob September 24, 2005

STFU

An acronym for Shut The Fuck Up. The illiterate mass that uses this seems to conveniently fail to realize that acronyms do not include a "T" for the article "the".

"If you ain't got nothing nice to say, then STFU."

"That's a double-negative."

"Huh, why do you speak in gibberish?"

by Killa Clownz March 26, 2009

STFU

The submission finishing move of John Cena. This hold is known in professional wrestling as the Stepover Toehold Sleeper (STS) and innovated by Masahiro Chono. The wrestler performs a stepover toehold and wraps his arm around the neck of the opponent as in a sleeper hold.

John Cena made Batista tap out when he applied the STFU.

by RGI December 27, 2008

STFU

As of August 13th, 2009: International Suit Up Day.

STFU stands for "Suit the fuck up." It should be said when someone is not legendary (i.e not wearing a suit.) Should be said to anyone not wearing a suit on International Suit Up Day.

Person A (Wearing a suit) walks up to Person B (not wearing a suit)

Person A: "Dude STFU"

by Syko/Aran August 13, 2009