Stfu means shut the fuck up....
I'm playing fortnite stfu
by Learn something new everyday February 17, 2020

Stfu is a shortcut to saying “shut the fuck up.” If someone is mad or is joking around they would be saying “stfu” Usually you would use “stfu” when you’re texting someone.
by Ratatatatatsgajen May 20, 2020

A, just shut the fuck up ok
by rightrightrite January 29, 2020

Short term/acronym for Shit-That-Flies-Up.
by Quandel Dingle May 3, 2022

by zariaxlover March 7, 2020
