A boyfriend I used to have told me about something he believed when he was little. He went with his parents to the Walter Reed Medical Museum in Washington, DC. There were a lot of body parts in jars.
He knew most of the parts, like the lung or the leg. He asked his mother about the contents of a particular jar. "That's what makes you pee."
So for years he thought that a bladder in a jar in Washington, D.C. was a kind of central controller that determined when everyone in the United States had to urinate. I guess it would make sense, so not everyone would rush to the toilet at the same time.
A childhood belief about weeing and pooing

others believed things like this
- I used to believe that China was attached to the United States somewhere up near Washington state.Anon
- I used to believe that the lower level of the George Washington Bridge in NYC was named Martha Washington— Shayne
- When I was little I thought that Washington( D.C. )was in Washington state. Anon
- I used to believe lepers came from Ireland. Like leprechauns, only with less body parts.Anon
- I used to think that bodily tissues were kleenex sheets that grew in certain parts of your body.Anon
- I used to believe that a funeral organist was the person who collected the body parts of the deadAnon