After watching "It" by Stephen King for the first time, I refused to step on a bathroom drain because I was afraid that a clown would come up from the drain below and attach me. To this day, i still won't stand on drains because it makes me uncomfortable even though I know that there is no clown down there now.
A childhood belief about bathrooms

others believed things like this
- I used to think that a clown lived under my bed and tried to eat me while i was asleepAnon
- I used to believe that i was turning into a clown whenever I cried becase my cheeks and nose would become red— melissa
- how many us believed you would go down the drain with the bath water? I did!— Amy
- I used to think a drain pipe in my backyard led to another world.Anon
- i thought that when you were in the bath you would get sucked down the drain— blake
- I used to believe that once you pulled the plug in the bath a shark would swim out of the drain and eat you.— Amy