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1 definition by mayostard

 
1.
When an individual clearly has to drop some brown, but instead tempts fate by squeezing out a series seemingly abundant farts... much like squeezing the trigger in traditional Russian roulette.

A winning participant is blessed with the gift of hilarious flatulence and clean underwear, while a loser has to deal with the unpleasantness of a shart.
Karl's totally petrified of public toilets - he ended up losing at Mexican roulette last night at the bar and had to cab it home with shitty pants. What a douche.
by mayostard April 20, 2005