When I was young, I once thought that I could see bacteria. They didn't even look like real life bacteria, only green, big-eyed cartoon characters.
A childhood belief about eyes

others believed things like this
- When i was younger i thought germs and bacteria were the same size as me— Tasha
- I thought cartoons were real, I remember asking my mom why there were lines around the "actors" in a cartoon.— Steven Graziano
- I thought cartoons were for kids and "real-life programs" for adults.— Ichigo
- When I was a young boy I thought when we cried or when we laughed we won or we lost one minute of our life. — loulou83
- I thought there was some video games so hard that if you died on them you also died in real life!— Kakuri
- In my childhood I used to think that all the superheroes I saw on television existed in real life— Cris