I had my birthday party at an aquarium when I was 5. While we were eating our lunch, a worker came along with someone dressed up as the mascot "Sammy the Seal". She asked me when my birthday was and surprise surprise, that was Sammy's too! Obviously, this was an out and out lie, but being 5 and terrified, I just accepted it.
I never thought about questioning it until I was 15. Why??
A childhood belief about birthdays

others believed things like this
- 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
- One of my children used to believe that the Pulitzer Prize was spelled Pullet Surprise— Normand
- I thought that people with the same birthday were always the same age.Anon