BFB
Breathing for Batman. In anticipation of the summer blockbuster The Dark Knight, many fanboys have come to use this as a way of expressing their 24/7 love for the film. This can also be used rhetorically or sarcastically against aforementioned fanboys.
From now til July 17, I'm just BFB all the way.

No way Ryan is gonna want to go out Friday. He's gone gay for the week, big nipple suit lovin' BFB.
by Aaron Joe July 17, 2008

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Top Definition
BFB
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

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bfb
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

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BFB
Big fat bitch
stop hitting on my brother you BFB
by jojo2cute4u July 08, 2011

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Big fat bastard. A way to insult fatties without them knowing.
"Hey look at that B.F.B.!"
by The Murf September 22, 2005

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BFB
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

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BFB
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

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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

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