my brother told me that cartoons were real people that got surgery to make their eyes big and round and then they were sent to live in the cartoon world for the rest of their lives.
A childhood belief about cartoons

others believed things like this
- I thought cartoons were real, I remember asking my mom why there were lines around the "actors" in a cartoon.— Steven Graziano
- I used to think that "cross-eyed" meant that people had X's for eyes, like dead people in cartoons.— Tim
- I used to believe cartoons were real people and animals. They were just wet.— Wendy
- I used to believe cartoons where real people. You can imagine how that went... — Emma
- I thought live-action films were very, very well-drawn cartoons.Anon
- That unicorns were real. They simply had invisible horns that only people with special eyes could see
— Katie