Top definition
Stands for Best Friend's Brother

Abbreviation often used by friends who are in love or who think they are in love with their Best Friend's Brother.
My BFB is the one for me. BFB, BFB!

Cause he's such a dream
And you'd know what I mean
If you weren't related
by BFB Lover June 14, 2011
Happy St. Patties Day!
Acronym for 'Best Friend's Brother'. Just like in Victorious Justice's song "Best Friend's Brother" where she constantly says "My Best Friend's Brother is the one for me." and then says "BFB!! BFB!!"
"My Best Friend's brother is the one for me! YEAHYEAHYEAH! A Punk rock drummer and he's 6 foot 3! ... BFB! BFB! My best friend's brother, my best friend's brother!"-Victoria Justice
by DipnShablam June 07, 2011
Happy St. Patties Day!
Acronym for 'better from behind'. Used to describe a visually challenged woman. Instead of adopting a missionary position or the girl on top, take the female from behind so one does not have to look at her face.
"Hey Nik, what was Angie like last night?"

"Oooh. A bit of a bfb, mate. We started off with her on top but Little Nikky was not not impressed - he retreated into his shell. Flipped her over and no probs. A lot better from behind."
by The Strut October 20, 2004
Happy St. Patties Day!
Big fat bastard. A way to insult fatties without them knowing.
"Hey look at that B.F.B.!"
by The Murf September 22, 2005
Happy St. Patties Day!
Boobs From Behind. A fortunate combination of svelte torso and large endowment that allows the outside curves of a woman's breasts to be seen from a vantage point behind the woman.

BFB's are a very desirable trait.
"Bro, I can't wait for that chick in front of the line to pay and turn-around. Even her BFB's are awesome."
by jt_twit October 07, 2009
Happy St. Patties Day!
BFB stands for Bigfoot Believer.

Someone who believes in Bigfoot.
Person 1: I believe in bigfoot.
Person 2: Ooo so you are a BFB?!
by BFB4lyfe December 29, 2010
Happy St. Patties Day!