As a child of 8 I believed I was nothing but a brain in a tank of fluid and that the world and the people around me were actually artificial constructs being 'played' to me by aliens who wanted to monitor my reactions as an experiment. It really blew my mind 25 years later when I watched the Matrix. Maybe I was right or, more likely, maybe I never grew up.
A childhood belief about i'm different

others believed things like this
- I used to believe that peoples ears grew so that when the world blew up we would be able to fly away.— Ears
- After seeing Thomas the Tank Engine, I believed that all the locomotives in the world had a face.— Joe
- When I was a child I used to believe that when I played video games my real world changed like the game. — J
- I used to think that the TV show "Shark Tank" involved actual sharks in a tank.Anon
- When I was a child and the wind blew strong I used to believe that someone was hiding under the bed.— FER
- Until a few years ago, I believed this was a "doggy dog" world, rather than a "dog-eat-dog" world.— jemima