When I was younger, I knew a Jewish kid that was born on Christmas. Without asking anyone, I automatically thought that anyone born on Christmas had to be Jewish because they couldn't celebrate their birthday and Christmas on the same day. I'm a teenager now (16) and after I finally told one of my friends a few weeks ago, I realize how stupid of a belief this was.
A childhood belief about birthdays

others believed things like this
- I was told that for every christmas carol i sang before christmas time santa would give me one less present!— K
- I used to believe the Christ was born
on Christmas Day and crucified the
following Easter.— William Golding - I used to think it was against international law, religious principles, etc. To be born on Christmas Day. :PAnon
- Since Germans speak German, I thought Jewish people spoke Jewish.— Lori
- I grew up Jewish. Until I was about 10, I believed that everyone who wasn't Jewish was Catholic.— Philm35
- When i was little, I used to send Jesus birthday cards on christmas and thought he would read them in heaven.Anon