I thought all girls were born in winter and all boys were born in summer. I also always thought that eventually, I'd be older than my brother and sister. I'd say "One day, I'll be 10 and you'll only be 5!" Even though I was the youngest. And we'd argue for hours about that.
A childhood belief about birthdays

others believed things like this
- I used to believe that I was older than my brother because I was born in June and he was born in OctoberAnon
- i believe that if im born in december im older then people born in may— runawayfox16
- Backstreet Boys - I want it that way? I heard "I was born on a tidal wave— gembop
- I thought that you were born at a certain age. I thought my Nanna was born that big and old. :-)— Hillie
- I thought that the difference between girls and boys was that girls have teeth.
Anon - I used to think the lyrics of "Boys of Summer" said "poison summer"— Lindsay