My buddy used to work in a drug store in Detroit. One day one of the customers told him that there was a problem in the mens room. In one of the stalls someone had diarrhea'd all over the walls in one of the bathroom stalls. He said it was the most disgusting thing he had ever seen. A few weeks later, it happened again. And then again. It started happening more and more frequently. Pretty soon it was happening a couple of times a week and they couldn't figure out who was doing it, but they did have a few suspects.
Finally, they figured out who was doing it. It turns out there was some random guy who would stand outside the building and chain smoke cigarettes.....a lot of them one after another as quickly as he could. Every breath he took was a drag off a cigarette. He would then go and cover the walls of a bathroom stall with explosive diarrhea. The day my buddy caught him he was in the middle of doing his business and my buddy started yelling at him. There is a strict no touching/apprehending policy at the store so they couldn't stop shit man. The guy was pulling up his pants and trying to run out of the place while my buddy is yelling at him all the way through the store.
That was the last time anyone ever saw shit man.
No one knows why he did it. No one remembered him buying anything and the video in the parking lot showed him walking to the building so there was no way of finding out who he was.....shit man is believed to still be at large.