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A system of measuring flatulance. Similiar to the Richter Scale but used to measure assquakes as opposed to earthquakes.
Man... i dropped a bomb in class today that must have been at least a 7.5 on the rectum scale.
by jerk jiggler February 20, 2005
A scale used to measure how much of an asshole someone is! (similar to the Richter scale, only used for douche bags and cockholes)
That jerk off stole my loot - he's about a 10 on the rectum scale.
by Skyynet August 30, 2009