Top Definition
The act of pulling down your pants and farting bare assed on an unsuspecting person.
Yo, I totally unfiltered (enter name here) while he was playing Halo.
by The Real Duda February 19, 2008
1 more definition
The act of expelling gas from your anus without any clothing or cover to filter the hot air.
Mario pulled down his boxers and let out an unfiltered fart
by Clayton25 March 26, 2008

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