The quantifiable magnitude of fart repulsiveness which includes odor amplitude, and duration. This is measured on a scale of 1-10.
by Cango April 02, 2011

Person 1: *Stomach rumble* Woah! My stomach tells me there's a cute ass girl coming into our lives today!
Person 2: Stop gastromancy ing!
Person 2: Stop gastromancy ing!
by PandaGirl xox May 30, 2016
