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1.
n.
the measure of greatness of rank or position, size or extent, and/or significance or influence in the state of being a Bad Ass MotherFucker

On a scale of 1 to 10, Samuel L. Jackson is an 11 in BAMFitude.

Cracka Tim was inadequate in the realm of BAMFitude.
by The Real Governor August 22, 2007
 
2.
Having the qualities or attitude of a Bad Ass Motherfucker.
Samuel L. Jackson displayed his BAMFitude in reciting Ezekiel 25:17 before killing people.

Mark Wahlberg's inner BAMFitude was evident when he shot Matt Damon in the Departed. (Sorry about the spoilers, but it's for a good cause)

by Garrett Alden August 10, 2007