This probably wasn't actually a belief, but what someone else wrote reminded me of this. When I was young, I watched a lot of Godzilla movies. And also, I apparently hadn't seen many Asian people in my life. So one day at the mall, as my mom tells it, we passed by some Asian people and I blurt out something to the effect of "Look! It's the people from the Godzilla movie."
A childhood belief about appearance

others believed things like this
- when I was little I used to think that when you said the word "Godzilla you were saying God's name in vain — Stargirl
- I use to believe that Godzilla was real. And thought I could see him if we traveled close to Japan.Anon
- I used to belive you couldn't stop growing until you were bigger than godzillaAnon
- When I was 3, my neighbor told me she was a witch and she said Godzilla was going to step on my house.— Grayson
- At nights, when I have trouble sleeping, I used to hear large footsteps - something like the Godzilla.— John
- when i was little i believed that when we watched a movie people had to act the movie all over a gen.
— Emmer