BFF 

Meanings Best Friend Forever, but has been made incredibly stupid and overrated, mainly by stupid commercials trying to be "hip".

10 years ago the term BFF meant best friends forever, now i shudder every time i hear it because of stupid commercials trying to be cool by interacting with the younger audiences, but failing miserably and making whatever their advertising look like shit.

BFF by iTz X LegitChronicAznMLGSnipes June 28, 2011

BFF 

But Fuck Fantasy, or Best Friend Fucker

you are the coolest BFF ever!

BFF by poo November 10, 2003

BFF 

big fucking faggot. commonly used as "last one to ______ is a big fucking faggot!" to replace the more sophomoric "last one to ______ is a rotten egg!".

last one to remove is a BFF

BFF by KaOs- October 17, 2010

BFF 

Butt Fucked Forever

Meaning you got screwed over,
Used like SOL

"Dude last night was lame"
"Yea you're BFF""

BFF by Shian August 14, 2007

BFF 

Butt Fucking Fan

This is Brian. He's gay.

Brian: I'm a BFF.

BFF by Big Thor December 6, 2009

bff 

Acronym for "Best Facebook Friend".
Meaning a person who you are in contact with regularly on Facebook, however you rarely speak to in real life.

1: Hey man you know that girl Cindy? She must want to get with me. We've been talking on Facebook all the time!
2: Forget it dude; she's just a bff.

bff by The Webman August 28, 2010

BFF 

a two-timing b**** who says she's ur best freind, but turns into a preppy flirt in Uggs who steals ur guy. someone who is not worth crying over, but you do anyway.

ex. someone you probably know

BFF by BrokenSoul February 9, 2005