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
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Girl: „ i know you think only about me. 😏“
Boy:„that's true. can we go out?“

girl:„sorry, i can't. but you're so hoooot.“ (fbu)
by 5figgme5 February 15, 2022
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girls that don't want relationships, don't want to fuck with you, don't want to kiss you, but will flirt with u
you are FBU
by 5figgme5 February 15, 2022
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hardest cunts aroud next to mortdale
by Anonymous July 25, 2003
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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
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