I believed "lesbians" and "Presbyterians" were the same thing; I still don't know why. I can't imagine the conversations I had mixing those two up.
A childhood belief about speaking

others believed things like this
- I thought you could get toffee from mixing tea and coffee.Anon
- I used to think that teenagers had really interesting conversations.— Nathan
- I actually asked my mother if mixing girls' poop and boys' poop would cause an explosion.— kraine
- I believed for years that the sun and moon were the same thing - it just glowed more in the day :)— Deb
- I believed the sun and the moon were the same thing, just rotated to change from day to night.— Daniel
- I once believed that if I wore my Halloween costume to bed, I'd wake up as the actual thing.— Sarah