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

Oh man, that car's BFU.

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

She was bfu

He was bfu

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

Damn baby bfu

example

girl : u gettin on my f'n nerves

Dude : bfu and got to hell