Top Definition
A move performed by moving your anus cheeks during a fart to effect its sound.

This can only be done on farts longer than six seconds and usually involves changing the pitch or vibrations of the fart.

Dude, did you hear how great my fart tweaking was there? It started out all soft and then I tweaked it to get some nice bass and great volume.
by The Earl of Breezer May 12, 2007
6 Words related to fart tweaking

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