by Schultz February 3, 2005
the definition of stfu is Save The Flying Unicorns, used to make someone shut the fuck up by using confusion.
by xXx_anonymous69_xXx August 15, 2016
1) The messaging acronym for "Shut the fuck up."
2) The initials of the fictional organization "Scarf Team Freaks United"
2) The initials of the fictional organization "Scarf Team Freaks United"
by Zizefia August 29, 2007
Jack: You suck.
Jill: fu
Jack: No, really. You're horrible.
Jill: stfu!!!!!!
Jack: =O Where?!
Jill: ?
Jill: fu
Jack: No, really. You're horrible.
Jill: stfu!!!!!!
Jack: =O Where?!
Jill: ?
by checkerz July 24, 2008