What is Omh?
"Oh My Head"
The person saying that usually means to express his feelings towards the level of stupidity of another person after a particular action, "omh" comes when no words can define the stupidity and the 1st person is left speechless, with "Oh my head..." being the only thing he can say...
Dude 1 Shakes the bottle coke and it bursts open, spilling all over the walls and the ceiling before he finally realizes that he can point the bursting jet of foam to the window, but by the time he does the jet already dies out.
Dude 2 - "Oh my head..."
acronym for "oh my hell". Used on the interent.
I just watched an MTV Osbournes Marathon - 10 episodes in a row OMH!