I assumed that some people were born old, and I happened to be born young and would stay pretty much the same forever.
A childhood belief about getting older

others believed things like this
- I used to believe that grown-ups were born "grown up" and that I would stay a little kid forever.— Still A Kid
- i believe that if im born in december im older then people born in may— runawayfox16
- In the mid 90's, I used to believe that babies who were born in the year 2000 would live forever.Anon
- I used to believe untill I was five that all adults are born like that and all little children stay little— Igor
- I used to believe that I was older than my brother because I was born in June and he was born in OctoberAnon
- when I was young I used to believe if I squinted my eyes and it was windy my eyes would stay like this forever— Jeanne