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1. FRB
Fat
Rat
Bastard
Hater #1: Yo look at that fat muther fucker over there.
Hater #2: Which one?
Hater #1: That FRB with the front-butt
Hater #2: Fo Sho Nigga
2. FRB
Fully reppin Birmingham
Person 1: FRB all day

Person 2: FRB??

Person 1: Fully reppin Birmingham
3. frb
an acronym. frb stands for "for real bro". to be used in conjunction with "dbsb"
to be used in double agreement, as in
person 1: "that was a good fucking burrito"
person 2: "dbsb"
person 1: "frb"
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