Definitions by CSN.NIC

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