Top Definition
shut the shit up; more like a sister to stfu...
idiot10: ur so ghey
jeliza: stsu
by JelizaRose March 07, 2008
2 more definitions
Shut the smurf up, used in place of stfu.
Smurf 1: Yeah, I saw you leave with Smurfette.
Smurf 2: Oh man, as soon as we got out of the bar, she started smurfing me.
Smurf 1: Stsu!
Smurf 2: Yeah!
Smurf 1: Right in the Smurfing parking lot?
Smurf 2: Smurf-Yeah!
Smurf 1: Oh! That is freaking Smurf!
by m3h November 01, 2005
Cousin to STFU; internet acronym standing for Shut That Shit Up
BillyRay6969: dude i can't believe you'd sleep with my girlfriend

GFdoer87: STSU
by tmoney March 22, 2005

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