This term is used when someone gets get owned and wants to say "Oh my god! Owned!" at the Same time.
Oh My God + Owned = O2MG
Oh My God + Owned = O2MG
by C-late December 20, 2009
To declare immense dominance over an opponent or a situation with exclamation and enthusiasm. It combines ownage and omg by combining the two O's of each word.
by alloo December 19, 2009