When I was little I knew that belly buttons had something to do with babies, but not what. Plus all the men in my family had "outies" and all the women had "innies".
So I decided that when a woman was pregnant, the baby would grab a hold of the inner end of the belly button and breathe through it like a snorkel.
A childhood belief about belly buttons

others believed things like this
- I used to belief that women had babies by pressing their belly buttons!— amy
- I used to think that babies were made when you press your mums belly button.
Then a baby would fall out— Chris Hyndman - I used to believe that babies came out of belly buttons — kels
- You couldn't have your belly button covered for too long or it would be harder for you to breathe.— Jess
- babies come out of your belly button— Kit
- when I was a kid I thought that babies come out of a belly-button.— Ana