I have a sister who is 4 years younger than me; her birthday is on February 2nd and mine is on the 28th.
I used to believe there was something wrong about her birthday coming before mine and every year I used to ask my parents why we celebrated her birthday first!
A childhood belief about birthdays

others believed things like this
- 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 if i didn't celebrate my birthday each year my younger sister would catch up with me— q
- My cousic used to think he was older than me because his birthday was in June and mine was in December.— //**...Ethan...**\\
- I used to think my birthday was a holiday everybody celebrated ]w]— Rin
- I used to think my birthday was a national holiday and the whole world celebrated it— アノン
- Since I was born on the 4th of July, I really thought the entire country celebrated my birthday.— -Stoddard