I used to belive that children were simply a by-product of getting married and that sex wasn't involved at all. Once a couple was married someone would come along and deliver children to them.
A childhood belief about reproduction

others believed things like this
- I thought that Ted Bundy was a character on "Married With Children."— Patrick
- I used to believe that when two people married their children appeared out of the middle of nowhere.Anon
- I used to believe that having children could only happen after a wedding with the person you are married to.Anon
- I used to think that when a couple got married and went on their honeymoon, they took a vacation to the moon.— Jen
- I used to think Uncle Ben and Aunt Jemima were a married couple. — l stu electtirc boogaloo
- i used to believe nuns were married to jesus and priests were married to mary.— sunshine