I read a lot of Calvin and Hobbes as a young child, so one day I found myself wondering, "Why don't speech bubbles come out of our mouths as we talk?" This puzzled me for at least a month afterward.
A childhood belief about speaking

others believed things like this
- i used to believe that babies had no mouths because they couldnt talkAnon
- I spent ages wondering what a bart ender was as a child without realising that it was actually bar tender.— Heather
- When I was a child I used to believe that teddy bears could talk to me at night.— Daiana
- I used to think you could go to jail just by saying a word wrong during a speech.Anon
- I don't know why, but for some reason I thought that blinking your eyes powered your speech.Anon
- I used to believe that monkeys were related to fish as they both have mouths!— Quako