1 definition by teX3000

Gas Assisted Turd Squeeze-Out.

The phenomenon, where an act of discharging feces from the rectum is made easier by a gas pocket situated directly behind said feces.
Man, that was a real GATSO! Glad I had that coleslaw yesterday, otherwise I would still have been wiping my ass.
by teX3000 April 28, 2010

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