My birthday is in February and my sister's is in April. We were two years apart, so when I had my birthday, it would look as though we were only one. (As in, I would be 7 then, and she would be 8) I used to think that someday I would end up older than my sister.
A childhood belief about birthdays

others believed things like this
- i used to think that if i didn't celebrate my birthday each year my younger sister would catch up with me— q
- My sister uesd to think that you did a whole year's worth of growing in the night before your birthday.— Richard Davies
- Up until I was almost 11, I thought that a birthday suit was a special outfit you wore only on your birthdayAnon
- I used to think that a birthday suit was a special outfit you wear on your birthday— Bri
- I used to believe that on your birthday, you didn't advance to your next age until you ate your birthday cake.— Casi
- My parents have the same birthday -- month, day, and year. I though all mom's and dad's had the same birthday.— Cait