An auntie used to tell use that if we played with our belly buttons too much are bums would fall off. This was because she didn't like belly buttons and thought it would stop us from playing with them. I don't think it did much good though.
A childhood belief about belly buttons

you weren't the only one
97 of you believed this
- I used to believe that if someone unscrewed my belly button, my butt would fall off— David
- i was told that if you fiddled with your belly-button too much, my bum would fall off.Anon
- My Dad told me that if the knot in your belly button came undone that your bum would fall off! — Sue, Staffordshire, England
- when i was young i was told that if i played with or turned my belly button that my bum would fall off — lee hull
- That if you fiddled with your bellybutton it would unscrew your bum and it would fall off— Sundaeg1rl
- I believed that if you pushed your belly button, your bum would fall off.— Wendy