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 harddiarrhea 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.