A fork of Rural Dictionary
An abbreviated form of: Shut The Fuck Up Often used in the popular internet comic "Little Gamers" and on internet message board and chat rooms across the nation.
The Sims is teh suxorz. S.T.F.U!!!!11
Shut The Fuck Up.
The stupid bitch wouldn't STFU so I back handed her one.
SHUT THE FUCK UP
DUDE, S.T.F.U BEFORE I SHOT YOUR DUMB ASS!