BFSB

Meaning Best Friends Since Birth
Who's that?
Oh she's my BFSB.
by mochida August 15, 2011
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BFSB

Big Fat Softball Butts
Oh yeah the Washington Warriors Softball Team girls have some BFSB
by Bigdumbhead12345 May 26, 2022
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BFSB

BFSB stands for big fat softball butt
Oh yeah Alyssa Garcia Has a BFSB!
by Bigdumbhead12345 May 02, 2022
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