look up any word, like ratchet:
 
36.
The esteemed school known as St. Francis University. Named after the valiant Catholic priest Saint Arthur Francis, STFU is dedicated to providing their students a quality, yet spiritual education. In addition to the superb education offered at STFU, they are also known for their outstanding basketball team. Their mascot is the fabled Unicorn, as students can be seen all around the campus holding a hand to their forehead and pronouncing "UNICORNS!!!!" to the rest of the world.
1. "S--T--F--U--S-T-F-U-UNICORNS FIGHT!!!"
2. BAM!!! I just Unicorn stabbed you with my horn.
3. "Oh yeah I remember STFU, they had a good basketball team." - Mr. OL
by skyguy86 March 23, 2009
 
37.
STFU means "SHUT THE FUCK UP"
"STFU" "YOU SHUT THE FUCK UP"
by Dance Dance on your ass February 27, 2009
 
38.
SHUT THE FUCK UP
DUDE, S.T.F.U BEFORE I SHOT YOUR DUMB ASS!
by * BOO - BOO * July 12, 2008
 
39.
Another way of saying "shut the fuck up." It's used in fights a lot.
Troll: lol u suck balls fuck u
Person: stfu
by A Unknown Guy. July 11, 2013
 
40.
Suit The Fuck Up Sunday
Kevin started STFUS. I think I'm going to start. It's the classy thing to do.

Dave said we're poor if we don't STFUS.
by TiffanyLynnd March 25, 2012
 
41.
Shut the fuck up skank
me: bitch stfus
bitch: oky :'(
by LuckyxS15 April 04, 2011
 
42.
What Gerard Way Needs to do.
Steve really needs to STFU
by Katzy September 12, 2005