CSN 

CSN stands for a certified side nigga, essentially meaning a man on standby ready to fuck a woman in a relationship.

Girl1: my boyfriend so nice but he ain’t be givin me da inches right

Girl2: girl what you need is CSN
Girl1:what’s a CSN
Girl2:Certified side nigga...a nigga that makes you cum, and tells nobody

CSN by CSN.NIC December 29, 2019

csn 

Crosby, Stills & Nash

CSN made some great music

csn by Nick April 5, 2005

CSN 

At an astronomical speed, you’ve misspelt the most simple word. Can. Congratulations.

1: Why’d you call me?
2: CSN I COME OVER MY HOUSE BURNT DOWN

CSN by red2019 June 19, 2023

CSN 

Cock sucking nigga

Guy 1:black girls Give the best head

Guy 2:yea I need me a csn

CSN by Thatonecutebg October 4, 2019

csn 

csn is the coolest person ever but hes broke af my nigga no lie lmao

p.s im csn and imma kms

Person: woah is that a wild **csn**
Person: holy shit yes it is *starts barking*

csn by Itscsn March 2, 2021

CSN 

Chief Scratch Nuts - one who scratches their nutz frequently and feveriously.

Ty: What up wit CSN?
Fungi: He be scratchin' like a whore lookin' for a rock baby!
Ty: Cracktaculus!

CSN by MC Cribbage March 17, 2003

Cool Story Noob (a.k.a CSN)

Term used among friends (not close) to indicate how much you don't care about the story they tell.

Ishan: "I had to do me computer science today"
MING: "Cool Story Noob (a.k.a CSN)"

Cool Story Noob (a.k.a CSN) by MGtheGANG November 26, 2011