When I was being horrible as a little girl my mom use to tell me she had a tool and she was going to unscrew my belly button and my legs would fall off.
I looked for that tool for years.
A childhood belief about belly buttons

others believed things like this
- someone could unscrew my belly button, and if they did, my head would fall offAnon
- For years I heard the word "pedophile" and thought it meant a pedicurist's tool.— Lauren
- If you undo your belly-button with a screwdriver, your legs will fall off.— Toby
- When I was a kid my dad told me that if you unscrewed your belly button your bum would fall off.— Ann
- i was told that if you fiddled with your belly-button too much, my bum would fall off.Anon
- I believed that if you pushed your belly button, your bum would fall off.— Wendy