Unlike the Shart, Pooparrhea is much more substantial in that it consists of one fully formed log and also diarrhea at the same time. Much more research is needed by the scientific community in order to fully understand Pooparrhea. Also not to be confused with its close cousin, Poop Finger.
I decided not to flush after a bout of Pooparrhea. Then I had my girlfriend look at it with me. Based on sight and smell, it was easy to see that I had just eaten Panda Express.