A person who is a badass whose last name that begins with a Mc.
Wow, David McDonald is hardcore, what a McBadass!
by Super Hero Bill February 2, 2007
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Someone who wins 25 consecutive games of beer pong while demoralizing the opponent to the point of tears.

Also a huge fan of the color purple and curvy women.
My parents didn't name me Stuart Coldblooded McBadass for nothing.
by Stan Howard November 16, 2009
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