STFU full form is “shut the f*ck up”. It’s commonly used online when people are mad or annoyed at others.
S = SHUT
T = THE
F = F*CK
U = UP
OTHERS STFU FULL FORMS
Southern Texas Fertilizer Unlimited
Shreveport Times Forum Unhallowed
Scrawny Two Faced Underling
Snap The Farmers Underwear
Superior Tactical Fragging Unit
Save The Forum Unity
Save The Faithless Unbelievers
Society To Find Unconformities
Special Transitory Food Unit
Socks Television Fascist Underwear
Steal The Funky Unicorn
Street Tried Fords Unlimited
Stop This Foolish Ululating
Smells like The French Union
Southern Tenant Farmers Union
Super Toga Football Umbrella
Smell The French‘s Underwear
Southern Tenant Farmers’ Union
Save The Flying Unicorns
Sound Technology Fashion and U
Star Trek Federation University
Shut the Face Up
Shut the Freak Up
Security Testing For Utilities
So Thankful For U
Stop Tickling Fluffy Unicorns
Stop Tickling Furry Unicorns