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Pants worn several days in a row, that have been farted in, without washing. This creates such a stench that noone can escape the smell.
Oh man, we ordered pizza and the delivery driver was wearing his 6 day old fart pants.
by J. Foreskin August 07, 2008
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Originated near Frederick, MD circa 2004---noun---One who farts so viciously it leaves a pungent odor in their pants that may last an extended period of time.
Dude...Tim has some killer "fartpants" today.
by KMA December 08, 2004
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