OSN! 

"Oh shit nigga!"

A Black version of "OMG", which IS too white of a term to use for Blacks.

An acronym not meant to be used by anyone who isn't Black.

OSN! I lost my "Chris Rock: Bigger & Blacker" DVD!

OSN! by Oh man. o3o September 19, 2009

osn! 

"OSN!" is an abbreviation for the commonly used ghetto phrase..
"Oh shit nigga!"

Anthony & Cuta were playing XBOX for 12 hours straight when Anthony finally dominated the game and made Cuta wish he had won.
Anthony: OSN! I dominated that game.
Cuta: What is this a contest?
Anthony: In your face!
Cuta: Wish I drove a soup kitchen van.

osn! by Madison Ryder June 16, 2007

Osn 

For blacks, omg was officially ruled for whites. whenever a black person would use "omg" they would instead use "osn" which means "Oh Shit nigga!".

White person example:
Guy 1: Hey did you do biology homework?
Guy 2: Omg i totally forgot about that.

Black people
Guy 1: Ay did you do biology?
Guy 2: Osn, i forgot all about that.

Osn by DatNigga4rmOuterspace May 25, 2009

OSN 

means "Oh shit nigga". meant for black people who think "OMG" is to white.

"OSN did you see that chick?!?"

OSN by jakemebabe101 May 25, 2009

OSN 

A black version of OMG
stands for: Oh Shit Nigga

Devin: Damn, that girl is a double D!

Zavier: Osn! Foreals?!

OSN by Hagigamafuh May 25, 2009

OSN 

OH SHIT NIGGA

4 black people to use instead of OMG

OSN run that nigga gotta a gun

OSN by adrian kilpat. July 5, 2009

osn 

stands for "oh shit nigga!", supposed to be the new black term for omg (oh my god)

OSN, you heard about that dummie who give head?

osn by BaltimoreSunshinee. May 28, 2009