BFU 

English: Brain Free User
Czech: Bezny Franta Uzivatel

a: how can i change skin in ...
b: RTFM
a: what is rtfm?
b: read the fucking manual
a: ???
c: BFU
a: ???
b+c: brain free user

BFU by Vindaloo May 31, 2006

BFU 

Butt-Fucking Ugly.

Oh man, that car's BFU.

BFU by Shikne March 25, 2009

BFU 

Bloody fucking user.

Often use to describe someone who uses PC but don't understand it at all.

WTF is that? Some BFU uses IE on my PC.

BFU by noob May 13, 2005

BFU 

Butt fucking ugly

She was bfu

He was bfu

BFU by Andrea DGeorge Nor-Cal April 29, 2016

BFU 

Butt Fucking Ugly; absolutely hideous

"Did you see Kayla's new shoes?"
"You mean those BFU's?"
"Yeah, you saw them. She must shop at Gross-meisters!"

BFU by JC17 December 9, 2008

BFU 

Bitch fuck you to text some one and without fully writing it out just say B.F.U

example

girl : u gettin on my f'n nerves

Dude : bfu and got to hell

BFU by chindipper215 February 10, 2010

BFU 

Boner From u

Damn baby bfu

BFU by Daddy Denning February 20, 2019