An abbreviation that is widely used in texting and chat, and on Instagram, Facebook and elsewhere on the internet, but what does STFU mean in slang?
Most Common STFU Meaning
STFU stands for Shut The F**k Up.
STFU is used to either insist that someone should stop talking or to express stunned disbelief.
My boyfriend is really annoying me, he won’t stop talking and I just want him to stfu!
Other STFU Meanings
What Does STFU Mean?
Shut The F**k Up.