Two years ago, when I was driving through small town in Northern Nevada, I had to stop and use the bathroom. The only place open was a casino, so I went inside, went to the ladies room while the X waited.
The casino had obviously been remodeled several times, and was still quite small. There were only four stalls in the restroom, and ALL were empty. There wasn't hardly another person in the whole building.
So I was doing my business, when I heard the toilet flush and a sink turn on almost at the same time. I was so freaked out I hid in the stall for a good five minutes after the water stopped running.
The X said it must have been another guest, but he hadn't seen anyone else come out. I am to this day convinced that bathroom was haunted, probably the whole damn place was.
That's my haunted bathroom story, lol.