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Flatulence occurring when one is taken ill with a flu bug. The flu fart is defined by the inevitable leakage of wet fecal matter when the gas is released. It is never intentional. One who is with flu is forever fearful of the flu fart.
Roger was ill with a stomach flu but he went to work any way. During a sales meeting, he tried to pass gas and ended up with a flu fart and had to waddle out of the conference room.
by Ben Dribblin December 09, 2015
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