Sandy Turd Flex (STF)

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.

"Man I hate it when I have a sandy turd flex (STF) in the bathroom"

by Matt Stazjic October 3, 2016

stf

Sorry to flex

Sorry to flex, gamer
heh whoa..dude whoaa

damn stf, gamer

by big guyver March 29, 2019

Stf

Scared to fuck

She was to "Stf" bro
Damn bro

by Your maid August 14, 2022

Stf

Stf is an abbreviation for “stuff” usually used during texting

Dude 1: Hey man, do you have the poster board and other stf for our project?
Dude 2:Yeah! Don’t forget to bring the paint and other art stf.

by _oof_ers November 18, 2018