BSF

A bsf means best friend usually, bsf can mean a best friend who is like a sibling to you or just a best friend

Hey bsf how are you 2day

by Your_Dictionary April 14, 2019

BSF

Best sister/friends
When two best friends are so close that they consider themselves as sisters !

- Pauline and Catherine are really close!
- Yeah! They're BSF s :)

by foreveryounnng October 21, 2012

BSF

Best friend

You want to fight bsf

by Kiahhh February 24, 2018

BSF

How low do you hang?
Ball Sag Factor

How's the BSF today?

by FactRzerO August 01, 2003

BSF

"Bull Shit Foursome"
Four friends who often go out together on random crazy adventures and day trips.

Let's go out BSFing this weekend!

by Cindy5 January 24, 2009

BSF

The cliched phrase every guy tells to a girl when he wants her: Beautiful, Smart, and Funny.

Hey bro, did she say yes?
Nah, I did the BSF way too early

by Kukoo October 12, 2010

BSF

Someone who is a BOOB STARING FREAK. Usually straight guys.

"oh my gosh that chick has got a nice rack!"
"YOU BSF!"

by CoolerThanYou32197392183 January 23, 2009