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To take an extremely large and odorous shit while grunting profusely. Diarrhea does not count. A continuous terd is preferred. The more it is shaped like a fish the better.
What was that awful noise in the bathroom?

Oh, I ate at Taco Bell and when I got home I had to release a Grunt Fish.
by Head$hot January 12, 2009

Words related to Grunt Fish

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