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1.
To kill your unborn child days before Christmas.

You can kill your child via abortion, a punch or kick in the stomache, and finally the classic coat hanger.
Guy 1: "Dude, your girlfriend is pregnant?"

Guy 2: "Yeah! It must of been that night in the van.."

Guy 1: "Damn, tell her to get a Moriah"

Guy 2: "A Moriah? Why didn't I think of that? Thanks man!"
by grapelover32 January 01, 2011
 
2.
An utter irritation...Simply put..you don't want this around you AT ALL.
Amoriah, you're giving me a headache!!
by the forbidden wave of death October 16, 2009