Mutually Assured Destruction is the term used when one country launches nuclear warheads against another and that country retaliates in kind, resulting in the destruction of both much like the Fallout series. This theory is usually in association with the fail: deadly prodecure.
Dont nuke America cause they is M.A.D.!!
by vitamin D April 26, 2012
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signifies when a person is in rage ; signifies a extremly large a mount
I had no sleep last night im mad tired
by Suany March 29, 2008
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Gary: hey bro what are u up to today?

Juan: bro, im gonna go MAD

Gary: oooh, uuh, see ya later? umm bye

Juan: ;)
by sryoloXO96 December 12, 2011
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