Until I was about nine, I thought that breasts were these white, conically shaped, spirally looking things. It wasn't until retrospection years later that I realized that was what the bra my mom wore looked like. (a la 1950's)
A childhood belief about rude bits

others believed things like this
- i used to belive that kidney beans were bean shaped things that grew in kidneys... untill yesterday — Jokey
- i used to believe that a virgin was sum one who wore white socks— twinkle toes
- When I was little *I thought that if I dressed in all white I would become invisible.Sadly,I wasn't.XP— Kiki
- I used to believe that the oddly-shaped clouds were made from oddly-shaped sheep— Dickson
- I used to belief that the Muslim women who wore their garment wore it because they were bald.Anon
- I used to believe that old films were in black and white because thats how the world looked then.— JC