BSN

Abbreviation for bull shitting. Usually the slang term for bull shit is “bs”. So bsn is bull shittIN. It makes perfect sense.

I’m bsn right now, I got mad homework to do.

by Erikboyz December 5, 2020

BSN

Bio-Engineered Supplements & Nutrition

The best shit you can buy on the market!

BSN True-Mass is so delicious bro, I swear it tastes just like cake batter!

by iBJocking January 30, 2012

BSN

Bakk Street Niggaz!!

BSN are da Hottest younng Niggaz in town an yall cant Fuk wit dem theyre also known around Texas an very popular but get straightt to da moneyy Kuz dey known to Finesse!!👿👑

by BSN da GaNg February 7, 2019

BSN

Backk street niggas

BSN are the realest niggas out there to keep it real with yall lil bitches💯💯

by 874402 February 7, 2019

BSN

Bakk Street Niggaz!!

BSN are da Hottest younng Niggaz onnat shitt an yall cant Fuk wit dem theyre also known around Texas an very popular but get straightt to da moneyy Kuz dey Known to Finesse!!👿👑

by BSN da GaNg February 7, 2019

BSN

BatShitNutz
somewhere beyond regular nuts, out near the "I love me" vests

did you see that guy jump?
yeah BSN that one.

by GaelicGrime January 3, 2011

BSN

Either:

A.) Bio-Engineered Supplements and Nutrition

OR

B.) BIG SALTY NIGGER

Dude, Ronny Coleman is a BSN

Dude stop stealin my BSN shirt you fucking Egyptian, i got it with my nitrix.

by JR Summers April 1, 2008