Bu 

Alternate spelling of boo def. 4:1

I can't wait to see you. Drive safe bu...

Bu by MamalyMoshaa August 30, 2016

BU 

Butt Urine. When you have diarehha so bad it's just liquid.

Guy 1 - "Oh man I had suicide wings at the Broken Thumb last night, and I have the worst case of BU."
Guy 2 - "I am not going to feel bad for you, those wings are worth it."
Guy 1 "God fuck it all!"

BU by Gern Blanstein January 26, 2007

bu 

used between lovers

lets get low bu

bu by fuck me February 23, 2004

Bu 

A non-gender specific term of affection, usually said by someone of brown skin... applied to a significant other i.e. girlfriend or boyfriend.

yoo.. i need you bu... i gotta see you bu...

Bu by blah123456789 May 29, 2008

bu 

Either I don't know or I don't want to answer your fucking question.

"Nephew, tell me about your girlfriend."

"Bu."

bu by Screech January 31, 2004

bu 

Another way of typing "boo"

Boo/Bu - they mean the same thing!

bu by Sabian June 3, 2004

Bu 

A typographical error or sacrifice when typing the name Bü without umlauts, or when the "ü" character cannot be displayed in the desired situation.

Dear Bu, I do not have a keyboard with umlauts - sorry.

Bu by Sam January 2, 2004