f u 

an abrevation for Flute

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

f u by t.i.n.o. December 29, 2005

F U 

F U! F U! F U! F U! F U! F U! F U! F U! fu!

F U SAUCEY! F U SAUCEY! F U SAUCEY! fu!

F U by Balls!™ April 11, 2005

f u 

umm wat they sad but im here to be on internet again soo... umm... hi oh yeah f u

f u u stupid bum get ur own money

f u by amado February 13, 2005

F U 

it means FUCK YOU!!!!!!!

TIM: You are a loser.
BOB: F U!!!!!

F U by sexlord69 September 9, 2016

f u 

fuck you

"Clean your room!"
-"No, f u"

f u by cretaetive May 2, 2019

F u 

Back off

F u brooo

F u by anonymous September 15, 2020

F u 

Something a typical nine year old would say if they don’t want to get grounded

F u Billy

F u by I_am_the_glub_glub_somthing_ May 23, 2021