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2.
OHG
Oh Hai Guize, "Oh hey guys," misspelled. Used as a way to greet friends online.
On group AIM chat:
Person 1: OHG!
Others: Hey, Hai!, Hi, etc.
by Sanjaythebamf January 19, 2010
 
1.
OHG
A misspelling of "omg" that was backronymed to mean "Oh, hi God", as if a child discovered stealing a cookie. Usually said when one is in the process of doing something the lord would look down upon, such as watching certain late night films.
Person 1: Hey, Hot Tub Fun Times is on. I know its your favorite.
Person 2: OHG
by GrillyG November 06, 2009
 
3.
OHG
derived from OG Original Gangster. Now it applys to women. Original HOT GIRL
The Og and the OHG Daaaaamn.
by Jon M. S. September 21, 2004