Definitions by Crimson Coroner

OMH 

"Over My Head": the acronym used online to infer an inside joke was not clearly received by a person

Person 1: "ha ha, yea bro, she was a total FLAMINGO at that party"
Person 2: "Sorry dude, that's OMH, care to explain?"

OMH by Crimson Coroner November 7, 2011