When I saw "F" under sex (i think this was on my birth certificate) I thought I had 'failed' sex. I figured this meant I was somehow bad or dirty and was rather embarrassed by it. But I felt a little better when I saw my mom's driver's liscence... turns out she failed too!
A childhood belief about sex

others believed things like this
- I used to think you could have a heart attack if you failed to fall in love.Anon
- when i was younger i thought ac/dc's dirty deeds (done dirt cheap), was dirty knees and the thunder cheeks.— S
- a friend thought that the song "dirty deeds done dirt cheap" was saying "dirty deeds dunderchief"— dubs
- When i was little i thought that the mom's gave birth to the daughters and the dad's gave birth to the sons. Anon
- I used to believe that mommies gave birth to girls and daddies gave birth to boys. — Jackie
- I used to believe that women gave birth to girls and Men gave birth to boys— Rob