I always believed that the thin dark line that ran from my belly button down to my whatsit was the line the doctor followed when he cut you to get the babies out. I later figured it was a birthmark.
I am pleased to say he cut the other way.
A childhood belief about general

others believed things like this
- The line 'The dark sacred night' in What A Wonderful World is actually 'The dogs say goodnight'...— rebecca
- babies come out of your belly button— Kit
- when I was a kid I thought that babies come out of a belly-button.— Ana
- That the belly button was the place where babies where born from.Anon
- 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 a "punch line" meant a line of people waiting to dip punch from a punch bowl.— Sheila