percolating

opening your anus/butthole using your sphincter to allow air to enter. you then proceed to gain more air the same way. let the air sit then push out to perform an enormous fart

As short: perking

Guy 1: Dude I'm perking (percolating) so much
(loud fart)
Guy 2: AH that smells so bad!

by buttbreather123 March 02, 2009