I was on a road trip from Chicago to Detroit when we all stopped at a Steak and Shake. We noticed this curious guy holding himself while standing at the counter, but thought nothing of it. He retired somewhere unknown to us at the time, but we soon found out. We were only two tables from the restrooms and he flooded the toilet and it came out into the dining room where we were all sitting. The whole restaurant got ill and left because of the smell and feces coming out from under the door.
I had to find a dumpy gas station to pee in before we left town, as did the others I was with. The lights didn't work (it was 3am), no paper and puke on the floor. It was a total gross me out kind of thing. I would have peed in the grass along the highway before I had to do THAT again!