stsu

Slang for Shut That Shit Up

Alexis: You don't even know her so you can stop-
Nayeli: Girl I don't care stsu

by UndercoverMademan August 4, 2019

stsu

shut the shit up; more like a sister to stfu...

idiot10: ur so ghey
jeliza: stsu

by JelizaRose March 7, 2008

stsu

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 5, 2005

STSU

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

Stsu

Shut that shit up

“Like I was saying, Jordan better than LeBron”
“Man stsu!”

by billWecka June 24, 2025

stsu

stsu means shut that shit up

i miss my mannn
girl stsu

by big kayy January 22, 2025