One time I found my Dad's Playboy magazine. My young mind couldn't comprehend that a woman would want to have her photo taken when naked! My Dad told me that they weren't really naked... all the parts (the breasts and such) were fake and were strapped on to the body. They were actually wearing a bathing suit underneath!
A childhood belief about sex

others believed things like this
- I used to believe jaywalking meant walking around naked in public (from naked as a JAY bird...)— Izzi
- I used to believe once a man and a woman lay naked caressing each other, the woman would be pregant— oiman
- My brother told me one time that sex was when 2 people were naked drinking a coke from the same bottle.— Danielle
- When we were young, we used to call a woman's breasts, 'Hum Hums'— Steve Haughton
- For the longest time I used to believe that the male ballet dancers were naked from the waist down.Anon
- I used to believe that babies came from between/underneath the breasts.Anon