I used to think that when the water went down the drain it filled a tank and eventually the tank would be full and the bath would fill with dirty water and overflow.
I panicked one day when they must have changed the plumbing or something, becuase no longer was the drain empty, from then on there was always a water level (like the toilet) and i thought "its finally happened, the bath is full"
A childhood belief about bathrooms

others believed things like this
- how many us believed you would go down the drain with the bath water? I did!— Amy
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather
- When I was little, I thought that Water Towers were full of dirty laundry. Why? I dont know.Anon
- I used to believe that if i splashed water on the wall during a bath, the water would turn into spiders— justin
- i thought that when you were in the bath you would get sucked down the drain— blake
- When I was a kid, I use to believe, when I put salt in my bath water I will turn into a mermaid.— marletha