BSB

BSB stands for “big screaming bitch” these women are always overweight, mean, and love to yell at other people’s kids or just random teenagers.They seem to think they are doing the right thing when really they just need to mind their own damn problems.

Liam: Hey bro watch out there’s a BSB watching us in her car.

by when the moon hits your eye August 17, 2019

BSB

Butt Sex Brennen. I sweet dude that lies on occasion to his friends to sneak off and do butt stuff with anyone and everyone. An anal fetishist for the ages

Oh damn, it’s buttsex Brennen over there! Hey you said you were staying home tonight and now I see you’re just ramming holes!!! Wow, BSB... you’re truly Baron vonButtsex

by DonHippo July 22, 2020

BSB

Back stabbing bitch

A friend who appears to be a friend , but goes for your girl behind you back

Yo I heard Caesar was talking to your girl behind your back

He’s a bsb for doing that

by Caesar the third August 17, 2023

Bsb

Back Seat Boyz

All of us are BSB’s.

by maimai2000 November 5, 2020

Bsb

Bestie since birth. Someone u have known since birth or for as long as u can remember. U have always been there for each other and always will be. Can be boy and boy, boy and girl, or girl and girl

Girl #1: ugh I miss jack, he’s my bsb, can’t believe he had to move away

Girl#2: girl I may have not known u since birth but honey I will be here for u

by Happyhour101 August 20, 2018

BSB

When someone has transcended the relationship status of a best friend, and are now a backseat buddy.

Holy hell, I think they're BSBs for LIFE!
No Way!

by HAIM8 January 1, 2024

bsb

big stinky baby

dude. by the way your acting rn, ur being a bsb.

by bigstinkybaby September 26, 2021