bff has two definitions, the most common of which is Best Friends Forever. the other is the complete opposite and is Big Fat Fuck
yo is she your bff?

yeah, but not the kind you're thinking of
by bfflover123 December 17, 2017
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B.F.F.S.
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
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biggest fat friend, best fat friend
someone you dont like, you are my bff!
by ladfj;ll;dls July 11, 2008
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an abreviation for bast female friends or best friends forever meaning that nothing could ever separate u
1 : hey bff lets go to the mall

2 : sure lets get a pretzel

1 and 2 : no salt !!!!!!!!

1 : lol
by duuuuuudette who rocks June 4, 2011
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joseph and nicole who love ashley very very much.
you guys are just like bff. joseph and nicole
by be August 26, 2004
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A term used by a young person to a refer to an older person who they are close with or want to be close with. For a female the term Grandma BFF is appropriate.
I wish I could hang out with William Shatner. He would make an awesome Grandpa Bff.
by Nes88 September 8, 2009
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