As a result of helping my mom change my baby brother's diapers when I was three, I somehow reasoned that the entire purpose of a boy's penis was to help the doctor tell if a baby was a boy or a girl, which was important because the parents would have to know that in order to decide what to name it and what kinds of clothes to buy. I believed this until I learned about "the birds and the bees" when I was eleven - it was certainly a shock.
A childhood belief about rude bits

others believed things like this
- Adult diapers feel and sound just like baby diapers but dont have the cool prints on them— jakjflkaj
- I used to think that pads were little diapers for my baby dolls.. haha— Lalala
- when I was little I was afraid of flies until mom told me they were baby birds!— Lisa
- I used to think House Finches were baby birds and they'd later grow into Robins or something— Mica
- When I will little I used to believe that when you got married, you signed a contract to order a baby! LOL— Kriatina
- I used to think that in order to have a baby two people needed to kiss for 15 minutes with taking a breath. Anon