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

STFU

Shave the furious Unicorn

Bill: STFU!

Jill: WHAT?!

Bill: *points to an angry unicorn* Shave it. It's furious

by MusicEmo June 16, 2010

STFU

Stuff That's Fun Usually.

Canned goods and hitting little kids is STFU.

by fruitsmakemehungry. August 21, 2009

STFU

Meaning: Shut The Fuck Up! used when instant messaging

Used in the IMing world: "You stupid bitch!....STFU"

by Kirsti... yo. May 2, 2006

STFU GTFO NOOB

Shut The Fuck Up,Get The Fuck Out Noob
Used to get someone out or stop talking

Eric: Hey guys do your math homewrok?
John: STFU GTFO NOOB!

by HackerHippo December 6, 2007

stfu bob

Stands for 'shut the fuck up robert'

Commonly used in Edinburgh

'STFU BOB!!'

by gohome July 29, 2008

stfu im sleeping

A way to tell someone to shut the fuck up when your about to go to sleep or if your going offline from a website to take a nap.

your friend: yo whats up bro?

you: stfu im sleeping

your friend: ok later dude

by conertavoly November 29, 2009