F-U

Two letters in the word fun.

We put the F-U back in FUN!

by Dark Chaos December 21, 2003

F-U

John Cena's version of the DVD.

That's the F-U! It's named like the F5, because it's so similar!

by lee May 08, 2003

The F-U

John Cena's finisher move (came before the STFU).
He came up with this name when he was in a fewd with Brock Lesnar, whose finisher move was the F-5.
Also an abbreviation of 'F*** You.'

"Yo, Brock, your finsher's the F-5 - well, mine's the F-U!!

Person 1: (gets nudged by bypasser) Aww, F-U!!
Bypasser: Dammit, just say the word man!

by Greg A Woodin August 05, 2007

f u

an abrevation for Flute

Niki: hey you know what? f u !
Tino: flute?

by t.i.n.o. December 30, 2005

f/u

follow-up: to pursue in an effort to take further action

"Thanks for the f/u. I can always count on you to resolve my concerns promptly."

by Veggiecat March 16, 2007

Kung F-U

When you flip someone off after giving them a square hit to the jaw.

Yo man did you see Larry last night?! He punched a nigga in the jaw then flipped him off! He totally Kung F-Ued him.

by DDSavage January 01, 2016

ctrl+F+U

From the web series Red vs Blue, Caboose's keyboard shortcut at command for every time he team kills.

Washington: "I told them Caboose did it. Apparently they already have a shortcut on their keyboard for recording his team kills"
Caboose: "Ctrl+F+U"

by confusedfish January 08, 2010