The act of going diarrhea. Commonly associated with: the hershey squirts, explosive bowel movements, porcelain punisher, and generally destructive colon activities.
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."
the act of sneezing so hard diarrhea explodes out of your ass
After eating all that tikka masala, my stomach didn't feel so good, and then when I sneezed in the shower, I ended up diarrheezing all over. Took me an hour to clean. Took some Tilex to get that shit off.