by Jinx June 13, 2004
by sofunnydefinitions April 14, 2010
by OC_73 July 12, 2006
It means "Shut the fuck up"
by Inpyo April 29, 2004
As her small children looked on, she yelled: “STF up! you little four-legged yapping machine, go in the house, go to beddy!”
by Dr Bunnygirl August 09, 2019
When a person catches a cold or flu virus after a sexual encounter with another person infected with the virus.
Tim: How come you're coughing so much?
Andy: Caught a STF from that chick last night.
Sexually Transmitted Flu (STF)!
Andy: Caught a STF from that chick last night.
Sexually Transmitted Flu (STF)!
by lkitten February 27, 2010
When you're taking a dump and your butt flexes forcing the poop to retract into your butthole causing the sensation of sandpaper going up your butt.
by Matt Stazjic February 05, 2016