I can't beat your stories of bad bathrooms per se, but, I can beat you on bad bathroom etiquette. I was in a bar/restaurant/nightclub/poolhall in a rural area of the south when nature called. The women were lined up around the wall, waiting for the single bathroom. As I got closer, the woman in front of me said, "You want to go in with me? It's a one-holer, but, we use the sink for a trough." Needless to say, I didn't wash my hands.