I used to think that 100+1=101 was too easy and therefore I thought it was wrong. I was soon corrected by my teacher who heard me calling somebody who thought that stupid.
A childhood belief about counting

others believed things like this
- I thought eavesdropping was actually "easedropping" because it was so easy!— Nate
- I thought liposuction was squeezing the fat out of your bellybutton. Too bad it's not that easy...— Angela
- I thought your loins were kidneys, and nobody corrected me until I was a teenagerAnon
- I used to believe that you spelled "ESSAY" like "SA" and "EASY" like "EZ".— Lauren
- whenever i heard a melody, i thought it stuck in my stomach when i heard it in my mindAnon
- I thought Santa was the President of the North Pole. It was stupid I know
lol— Lynn Wright