When I was a little kid, I asumed the word "several" was another way of saying "seven". And several could ONLY mean seven, and I would actually sometimes substitute "several" for seven while counting!
A childhood belief about counting

others believed things like this
- I used to believe that ATM'S had little people inside them counting moneyAnon
- I used to believe the way they counted up votes was by counting the signs people used to put on their yards— Jaci Marshall
- When I was little I thought you could get arrested if you accidentally skipped a number while counting.— Hailey
- In first grade, I thought that if I've never heard of a word before, then it wasn't a word.— Destiny
- I used to think the word fever was just another word for giraff— Marshall m
- I used to believe that I actually invented the word "excellent".— poop jacket