a compound word that means "to be very angry"
Though confusing the word "mad" comes from the New york area and means "very" and/or "really".
I'm madangry she gave use all this homework to do.
The combination between the words mad and dumb. Mad, originating from New York, translates to "extremely" or "very". Used as an adjective when someone does or says something stupid
Wesley: Who wrote "The Diary of Anne Frank"?
Brad: Yo, Wesley you madumb.