O.J. 

Any Black man who is really into blonde white chicks.

Leroy Brown is totally O.J. He only goes out with blonde white chicks.

O.J. by Anita Bryant, gay bashing, OJ sucking singer July 1, 2006

O.H.M. 

Old Hispanic Man - someone who blantanly stares at you or makes suspious guestures trying to holla at you.

Lindseyfay you are such a O.H.M.! You are always stalking these random guys!

O.H.M. by jhrght December 20, 2007

O.K. 

O.K. stands for Ol Korrect. It used to be a popular saying back then.

Me: You have a funny face!
neighbor: O.K.

O.K. by VanessaL May 14, 2005

o.w.s 

Only With Sex...
commonly used on msn..

"hey aaron can i come over and study?"

"sure thing alex ... o.w.s....;)"

o.w.s by jesus's jesus January 26, 2010

O.P.A. 

Other People's Alcohol. Basically, stuff that other people brought to the party. My personal favorite kind of drink.

Mike: "My favorite drink is O.P.A."
Steve: "O.P.A.??"
Mike: "Other people's alcohol"
Steve: "Oh, yeah me too"

O.P.A. by Sinetro July 12, 2009

O.L.S Old Lady Syndrome

a condition where you feel a compulsive need to turn down party invites and/or any other happy event that involves drinking

jay: Hey anthony, come over and let's drink some wine.

anthony: I'm sorry I can't. My booty is very saggy and sticky today. I can't get up my sofa.

jay: You need intervention! That's a sign of O.L.S Old Lady Syndrome.

O.L.S Old Lady Syndrome by jiggabuff December 5, 2011

O.C.

O.C. stands for organized crime. A way of not using the term Mafia, or Italian Mafia, since Italians have no monopoly on organized crime. The Winter Hill Gang, part of Boston's Irish Mob were more notorious, if less well known.

That dude is really bad, he's suspected of being O.C.

O.C. by another_perlboy December 16, 2012