A non-gender specific term of affection, usually applied to a significant other i.e. girlfriend or boyfriend. Can also be applied to close friends.
"Hey Bu, I'm just killing to see you tonight."
by Robyn Saul January 21, 2004
Derived from the Indonesian word "ibu" used to describe a woman or house wife, shortened in Indonesian to "bu" in intimate relationships. In English "bu" is used by a male to describe his girlfriend or significant other.
Bu, can you get a Mountain Dew out of the refridgerator for me?
by Matthew October 17, 2004
A friendly word which is used to address a friend, usually a male.
by Kailua boy February 1, 2004
used between lovers
by fuck me February 23, 2004
Either I don't know or I don't want to answer your fucking question.
"Nephew, tell me about your girlfriend."

by Screech February 1, 2004
Another way of typing "boo"
Boo/Bu - they mean the same thing!
by Sabian June 3, 2004