I used to think that the people in the Domino's Pizza sponsorship ads on The Simpsons were meant to be the actual characters themselves and that it was Homer who said 'woohoo!' when the doorbell rang.
A childhood belief about tv

others believed things like this
- I thought Oklahoma was named after my Uncle Homer. (Pre-Simpsons)Anon
- When I was 6 or 7, I believed that people could have yellow skin like in the simpsons— Noah
- I used to believe that the people who "colored" The Simpsons ran out of skin-toned crayons.Anon
- I used to believe that if you ate the little seeds on pizza that pizza would grow out of your ears— chana
- i used to think a small man named homer lived in my grandmother's freezer and made ice. — ana
- I used to believe Jessica Simpson was a secret character from "The Simpsons"— Lemon Jelly