i believed until i was about five that as people grew into adulthood they sometimes changed sex, their genitals either shrinking or growing into the opposite sex. i used to study my dad (naked) and mum (ditto) and it just seemed that it was something that was quite likely to happen........... weird! strangely though i didnt expect to change into a guy..... was quite sure i would always remain female - and i have!. lol
A childhood belief about rude bits

others believed things like this
- I used to believe that my clothes were shrinking not that I was growing.— Joann
- I used to believe that if you rubbed naked feet with someone of the opposite sex you would become pregnant!— Tiffany
- i used to believe that everyone was born as the opposite sex, and that you changed when you started school.— llama
- Based on that memorable scene from the "Wizard of Oz," I used to believe that people died from shrinking!— Julie
- I believed until near adulthood that when I was 6 or 7 I had actually flown for several feet in my back yard. — Jane S Poole
- I used to want to be a cat when i grew up and i thought it would really happen!— Kyla