Same fear here. No basis at all. I have toilet dreams too- all are smelly and full, overflowing, and I have to use one. There are dark stalls everywhere and nothing works. While awake, I'm creeeped out by having to plunge the toilet. Now, I have no problems rescuing centipedes from the shower by hand, but keep me away from pool drains and icky toilets. Remember "the worst toilet in Scotland"? Trainspotting.