When I was young, I read something in a book by a Brittish author which said that in a submarine, food was stored anywhere possible, even "in the toilet". Not knowing that they ment the bathroom, I was confused why they would keep food in a toilet,
because did they bother to take it out before they flushed or not, and I wondered why they didn't cosider this metod of storage unhealthy.
A childhood belief about bathrooms

others believed things like this
- I used to believe that monsters lived in my toilet and they ate my poop and urine when i flushed the toilet.Anon
- 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 used to think if I left the toilet seat open my cat would get flushed down the toilet.— G
- I used to believe that Limabeans would kill you if you didn't eat them.
I flushed them down the toilet.— Lima - I use to believe that salt would cool food down while pepper would heat your foodAnon
- I used to believe when ordering Chinese food the food and delivery man came from China— Dave