When I was in kindergarden, I thought my birthday was november the 31st, which is no such thing. My mom isn't american and has an accent, so when she told me it was november 30th it sounded like 31th. My sister caught on to what I thought when I was in first grade, and told me my birthday was on the 30th,just in time, cause in that grade, we made a birthday tree, so it was just in time.
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
- I thought that Hey Soul Sister was by OneRepublic and released in November 2015Anon
- My friend thought it was SO WIERD that he was born on his birthday when I told him he was.Anon