look up any word, like bukkake:
 
1.
fbu
Fuck Bitches Up. Used by one group of girls to threaten another.
"Are you going to that Powderpuff football game tonight?"

"Yeah, the Seniors are gunna fbu!"
by mousefacee November 23, 2009
 
2.
FBU
Facebook Unsubscribe/Unlike
Douche Indian/Soccer Boy: Hey!
Cool guy: FBU
by Chicken Nuggets and Fries January 06, 2012
 
3.
A group of extremely fat boys whos aim is to take over the world and eat as much as they can, Fat Boys United also specialises in eating competitions,drinking and smoking alot, and of corse hating niggers.
F.B.U ARE COMING, prepare the food and get all the NIGGERS out of here !!!!
by Yazan Jweinat November 30, 2006
 
4.
FBU
Chat speak = Fine By Us
Online friend one: I'm gonna run to the store. I'll be back in a few.

Online Friends 2: FBU
by DorianGray April 10, 2008
 
5.
fbu
hardest cunts aroud next to mortdale
by Anonymous July 25, 2003
 
6.
fbu
fat cunts walla
by big m July 25, 2003