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.
means "Oh shit nigga". meant for black people who think "OMG" is to white.
"OSN did you see that chick?!?"
A black version of OMG
stands for: Oh Shit Nigga
Devin: Damn, that girl is a double D!
Zavier: Osn! Foreals?!
"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!
OH SHIT NIGGA
4 black people to use instead of OMG
OSN run that nigga gotta a gun