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
Contrary to popular belief the acronym BFF does not mean best friends forever. The actual meaning behind this is "Built For Fuckin" and refers to any female that has features that make her good for one thing and one thing only...FUCKING!! Features such as a big round ass, big ass tits (perky or floppy), long luscious legs, big full lips, and sexy fuck me eyes are all traits that make one "BFF"
guy 1: "Damn dog, look at that bitch over there she's fine as wine"

guy 2: "Yeah, she's definitely BFF!!"

guy 1: "what's that?"

guy 2: "means she's built for one thing and one thing only...FUCKING"
by T Weezy77 October 01, 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
Best Fuck Friend. Your 'go to' girl when you want to have some no strings attached sex.
Jen is great in bed but when I'm really horny Jill is my BFF.

I hit the skins with Michelle last night. She's my BFF.
by ThisGr8One November 18, 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
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