Abbreviation for best friendly, ferocious, fluffy, funny, fantastic, fun, floppy, fast, fat, flavorful, friend forever. When calling him/her a best friend just isn't enough!
Bob: Yo, she's too amazing to be my bff Joe: What is she gonna be then?
Bob: She's going to be my bfffffffffff !!!
Joe: lol
Best Friend Forever When No One Else Is There
What you call someone who isn't really a friend just so they feel like they are important in your life. You usually ignore this person's texts and only talk to them at school when they are the only okay person around. Usually Asian (more specific, Korean)