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A fart created by a democrat.
Holy Sheet! John McCain and Sarah Phailin has to live with the smell of demofarts for a damn long period now!

Yeh, they got PWNed!
by ChrisO'Neat April 28, 2010
A small fart that’s just a preview of the lager main fart to come.
“The demo fart is warning to everyone in the blast radius to evacuate.”
by Alibaster Slim August 06, 2012