acronym for Mutual Assured Destruction, a theory that states that a nation wouldn't begin a nuclear war because the opposing nation would destroy them in retaliation.
MAD may very well have saved all our asses from a nuclear holocaust on several occasions.
by Shawn E. November 7, 2003
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Madness is not a blurring or distortion of reality.. It's a sudden extreme clarity of things, unaffected by feelings or emotions"

- Ken Muslimovic.
A: You're mad.
B: That, I am, dear friend. That, I surely am.
by Vuk November 22, 2003
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Recently acquired by DC Comics, it's the best humor magazine EVER. Sure, there's a handful of commercial advertisements in its pages nowadays, but who cares about that?

Features content such as movie/TV show satires, Spy Vs. Spy, offbeat comic strips, etc. MAD's mascot since its inception, Alfred E. Neuman, is on every cover in some humorous fashion.

The magazine has also spun-off a fairly good TV series, "Mad TV," which airs in reruns on Comedy Central. Basically, Saturday Night Live on steroids. ;-)
Over the years, MAD has driven its competitor, CRACKED, into the dust.
by Jason L. March 26, 2005
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Used to describe someone that is obviously upset, but doesn't want to admit it.
A : "Dayum David Flores is HELLA MAD DOE"
B : "Kind of like Tsuky right?"
A : "Yeah, but he wasn't this kind of MAD"
by David's Sexy Mom November 19, 2014
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Erratic behaviour, usually drunken or high behaviour. Used in the greater western Scotland, Glasgow and east Edinburgh mostly.
Me and Stix went into Glasgow and got mad with it with a bottle of Bucky and a pound of crack.
by LaToiya December 22, 2007
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A word used in the phrase "What IS this madness??"
"What IS this madness??"
by the sane maniac February 1, 2004
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