When I was about four years old, I used to believe that the number 12 was a new number, just introduced when I was 6. So when I would count, I would count: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 13, 14, 15, and so on. I went on to believe that 4 was just substituting until God made thought of a number for that spot.
A childhood belief about counting

others believed things like this
- when i was little i believed that your social security number was the number you were born on the earth — christine
- I thought that Count Dracula was the count from Sesame StreetAnon
- When I was little I thought you could get arrested if you accidentally skipped a number while counting.— Hailey
- I thought everyone only had a set number of breaths before they died.
I breathed slowly for a long time.Anon - I used to believe there was a number "eleventeen". I could never quite work out where it went, though.— Matthew
- I used to think boys went "number two" with their pee pees. Anon