When I was a very young boy, my mom told me that women got pregnant from doing dishes. I really believed that for a while. (You can imagine how I felt when they told me I was old enough to start doing dishes).
A childhood belief about getting pregnant

others believed things like this
- When I was young I used to believe that when it is raining God is crying or washing dishes.Anon
- I used to think that satellites were launched from satellite dishes.— Mike
- I used to believe that sattelite dishes were used to shot down falling meteors that fell to earth.Anon
- When I was little i believed that women cannot get pregnant if they had a belly piercing— bananahead
- when i was young i believed that gay men got married to gay women!— robster
- I used to believe that women got pregnant just by kissing. — Lisa