A group of people who occasionally preform anal sex in the bum.
You are the best BFFs ever!!!!! Bart, ive known you long enough now, wanna be BFFs ;)
by Hay Gangster Child September 11, 2010
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
Acronym for: Best Fuck Friends
"George and Lisa are BFFs"
by Super Hot Hotshot March 01, 2010
Many of these definitions make sense to me, especially 'best friends forever' as the probably original genesis. Albeit, the word BFF is also the name of a mossy rock / abstract pop music band.
I am enjoying Bacon from BFF on my boom box.
by scupperjunior April 09, 2009
Meaning: Best Friends For Sex

Used amongst some really close friends, no relationship no nothing, just a fun night for both friends.
Maybe even involved with 3 or 4 people.
girl says to a guy: "I enjoyed it so much! always BFFS with you pal ;)"
by DeceptiBonk January 25, 2014
Abbreaviation for best friends forever.
Me and Amy are BFF for life!
by friendlygigchok September 11, 2012
Butt Fucking Friends. BFF's are friends that routinely engage in anal sex with one another.
Me: "Have you seen Ted and Steve?"

other person: "They wanted some alone time they are BFF's"
by iantmcg December 19, 2011

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