The term Overmeh is usually reserved for a person, place or thing which instills in it's user a tremendous sense of nothingness. For one to say, "I am overmehed" by a thing is to say one is underwhelemed, only more so. For instance, if somebody said to me, "Oh, you've got to see this new scifi movie! It's got robots!", I would be underwhelmed. Were this moron to go on to say, "Oh! And it's got spaceships! And ray guns! Oooh! And there's aliens too!", key neurological systems would begin to function abnormally, and Overmeh would be the eventual result.