I was once told that you made babies by touching belly buttons - my mum, not wanting to have to explain the real method wsa quite happy to confirm the tale.
A childhood belief about belly buttons

others believed things like this
- I used to believe that babies came out of belly buttons — kels
- I used to belief that women had babies by pressing their belly buttons!— amy
- I had an uncle that told me that we had belly buttons for putting salt in while we ate celery in bed.— ainmama2001
- I used to think that babies were made when you press your mums belly button.
Then a baby would fall out— Chris Hyndman - i uses to believe that boys wee'd out of their belly buttons.— boys and toilets
- that bunnies came out of belly buttonsAnon