Top Definition
A play on the term "diuretic," which applies to any substance that promotes the production of urine. As you could guess, A Diarrheatic is any substance that promotes the production of Diarrhea.
"As a doctor, I suggest you eat a lot of Diarrheatic foods to help with your constipation. I can fill you out a prescription for some laxatives, or you can just eat a lot of Taco Bell."
by Bort S. September 17, 2013

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