Something ridiculous just happened but somehow, you're cool with it. Weirdly, you're a little bit glad it happened. Best delivered in a tone which implies passive aggression.

To ve seriously mad

Most predominantly used in the greater New York area, "mad" is an appropriate replacement for Northern California's "hella" and Boston's "wicked." In the common vernacular, it translates into "a lot" or "extremely." Can be used almost interchangeably with any of the above listed words.

For the most part, it means angry.

As a product of abuse, (be it psychological, violent or combination of miscellaneous factors): A behavioral expression, (not necessarily unreasonable or a product of mental disorders) leading to an almost complete disregard of the instinctual directive for self preservation; which yields a disproportionate level of motivation to accomplish certain objectives of which are not necessarily violent or of ill intent.

My brother is mad. He is mad that his definitions on urban dictionary got rejected.
I'm writing this to piss him off.

MAD is an American humour magazine with comics. The name should always be capitalized as "MAD" to distinguish with any other Mads or the word (adjective) "mad". MAD is an acronym from "Mesh takes a D", in which "mesh" is "#" (number sign) and "to take a d" is to "commit a suicide".

An international treasure. An Adidas-clad daddy with alpine cheekbones. Good at everything. Exceptionally gracious and charming. Men and women fall for Mads irrespective of sexual orientation.