I used to believe that my birthday was when the new year started and everyone turned a year older on that day. Everyone else just had to wait to get older until my birthday (My birthday's actually in the middle of June).
A childhood belief about birthdays

others believed things like this
- My cousic used to think he was older than me because his birthday was in June and mine was in December.— //**...Ethan...**\\
- i thought I got one year older when my family sang the birthday song.— I am the ghost
- My parents have the same birthday -- month, day, and year. I though all mom's and dad's had the same birthday.— Cait
- i used to think that i was older than my dad because my birthday was before his— zara
- Up until I was almost 11, I thought that a birthday suit was a special outfit you wore only on your birthdayAnon
- My birthday was on a different day every year, assigned by my parentsAnon