I used to believe there was only a finite amount of water for the whole house. The reason my dad was always drawling under the sink or messing about with pipes elsewhere was because he was changing the filters that kept everything clean for us. I was deathly afraid that one day the pipes would get crossed and I would step into the tub and get showered by poo.
A childhood belief about bathrooms

others believed things like this
- I used to believe that we had a finite amount of skin and that I would eventually run out due to pealing.Anon
- When I was about 4 or 5, I used to believe that instead of bones, we had metal pipes. — TL
- I used to believe that car exhaust pipes were what propelled cars, instead of the engines.— Thomas Johnston
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather
- I used to believe that if I flushed the toilet before I showered, I would take a shower in dirty toilet water.— Chris D
- I thought that people were like cars because cars have exhaust pipes, and people fart.— Matt