I used to belive that 11,12,13,14,15,16,17,18 and 19, were said like , onety-one, onety-two, onety-three, etc. like twenty-two, etc.
A childhood belief about counting

others believed things like this
- I used to believe there were numbers called "onety" and 'twoty." I thought "twoty-nine" came before twenty.— CC
- When I was a kid I believed that the number 11 was pronounced "onety-one"— Alicia
I used to believe that some insects had twenty lives.LOLAnon- I used to believe that twenty was the largest number in the universe.— Bernardo Fernandez
- Just this moment I learned that earwigs do not go into your ears, i'm twenty-four.— Sheila
- I used to belive I was a dog— George hill