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?
by BaltimoreSunshinee. May 28, 2009
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A CAPPER WHO SUCKS OFF LEBRON AND RIDES RUSSELL WESTBRICK
by Mowaffles September 6, 2021
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Online Social Network

See, Perils and Possibilities of Online Social Networks

"Moreover, if it was posted publicly on an OSN site or blog..."
Facebook is an OSN
by anona. December 5, 2011
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"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.
by Madison Ryder May 28, 2007
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OOOh SHIT NIGGAAA

Started By The Basketball and Track team of UC
Kid1: Osn Did u see rayray he just ran a 16.1 in 110 hurdles.

Kid2: Osn He fast as fuck for his first year
by Mmmmmmmmm18 June 4, 2009
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A tv provider in the UAE that only shows episodes which are old Although they do show good shows
OSN or du or etisalat
by Ak99 July 17, 2011
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a true orignal sand nigga, its a new type of slang term used to describe one that has had hella fun during the summer and is now living it up in a penthouse, OSN style
you see that Original OSN jeffy, damn if i see that osn here... imma thorw up my osn sign
by Johnny Mohagany August 8, 2006
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