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1.
something you call some one who is mad rad ussualy used by skaterz
hey that trick was madical
by Mr. Steezy April 09, 2006
 
2.
A combination of the words "Mad" and "Radical".

Mad + Radical = Madical.
Hey Corey, your friend Chad is totally madical.
by Dr Robert Maric June 24, 2006