Bsf

Big Sad Fatty

Person1: You’re a bsf

Person2: I’m not ur best friend though. I don’t know you.

Person1: It means big sad fatty.

by ThatBallerina March 28, 2021

Bsf

Bsf Are friends that are supposed to be for forever they supposed to be happy and silly when there around each other Thee supposed to go through ups and downs together when they argue they just joke it off at the end

Wow Nesa and treasure are the The best bsf ever I wanna be like them

by Shhhhh🤫🤫 April 17, 2020

boy bsf

Really close friend that is a boy. Almost as if they are siblings.

I really want a boy bsf

by Miley Sasher September 30, 2017

Boy bsf

A boy bsf is someone that will treat you like a sibling but less mean. They will bring you food and give you hugs and cuddle you but it’s all platonic. If you have a boy bsf you are lucky

Girl 1: bro last night Jake brought me ice cream because I was sad, he’s a real boy bsf

Girl 2: LUCKY!! I need a boy bsf

by Ashfern February 22, 2019

bsf rebound

person whose being used by their best friend because they don’t have a bf/gf

person 1) i feel like kelly only really talks to me when she’s single
person 2) she’s found her bsf rebound ig

by hottestmilfoat January 20, 2023

bsf bc

bsf= bestfriends

bc=brother crush

so this basically means that you have a crush on your best friends older or younger brother...

woah you have a bsf bc
yeah...
you should tell your bsf

by brook;)) October 22, 2020

girl bsf

Very close friends. Almost if they were siblings.

I want a girl bsf

by JD_EX3 July 5, 2018