Big Fat Friend. The larger less good-looking friend of the hot girl at the bar. She can sometimes cock block a guy who is trying to sleep with the hot girl. Best to combat this by deploying your wing man.
Sheila was looking so hot, I was really trying to get up in that; but her BFF kept getting in the way.
by Steve O June 16, 2006
Get the bff mug.
Abbreviation for: Best Fucking Friend. The person to whom you are closest.
Dude, you're my bff! We get along so well.
by little man August 16, 2005
Get the bff mug.
Abreviation used to call an overweight person, big fat fucker
brian told me to block that bff
by Nick P. December 27, 2006
Get the bff mug.
Girl:Boy, you are my bff (best friends forever)
Boy:Girl, you are my bff too (he have mean bitch for fuck)
by coft May 19, 2009
Get the bff mug.
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.
by The Webman August 28, 2010
Get the bff mug.