1 definition by av99999

Top Definition
noun: pertaining to assholes who participate in monthly gatherings of Critical Mass bicycle rides through metropolitan areas (i.e. downtown Chicago) whom are known to think they are holier than thou because they ride a bike. Often with convoluted sense of pride and treat it as a lifestyle instead of what it is...just a mode of transportation.
That guys a critical ass always showing up drunk to ride.

Critical ass blocking traffic once again.
by av99999 July 24, 2008

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