1 definition by Tylercer&DannyGrant

An acronym three friends made up at school after seeing a hot peace of ass. F-Fat, A-Ass(literally her ass) B-Booty. Can be used around that girl without her knowing what is being said about her.
" Hey look there goes FAB, i want her juicy fat ass"
by Tylercer&DannyGrant June 25, 2006
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