My Parents told my little sister that they would put a special screwdriver into her belly button and unscrew it, causing her butt to fall off. I was 8, and had an outie (I was the only one in the family who had one), and asked how my mum would fit a screwdriver into by belly button. She said she would use a bottle opener. I went and try to pull it off when she wasn't looking, but I never succeeded. My sister is still trying to unscrew hers though...
A childhood belief about belly buttons

others believed things like this
- If you undo your belly-button with a screwdriver, your legs will fall off.— Toby
- someone could unscrew my belly button, and if they did, my head would fall offAnon
- My younger sister used to believe that in everybody's belly button there lived a family of squirrels.— Sophie
- i used to believe that if you poked yerr belly button yerr butt would fall off.— jordy
- 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