When I was a kid I believed that God made babies on a conveyor belt. And when they were complete, God would poke each baby in the stomach as they were passing by and say, "you're done, you're done." And thats why we all have belly buttons.
A childhood belief about reproduction

others believed things like this
- I used to believe that people made babies by pressing belly buttons.— eddy
- That babies come out of their mom's belly buttons.— Aria
- I used to believe that babies came out of belly buttons — kels
- I used to believe that babies came out of your mothers belly buttons:)— Mirranda
- 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