I thought that a "birth mark" was the first place on your body that was born.
My birthmark is on the back of my head but my older sister's is on the inside of her knee and I could never figure out how THAT part of her could come out of my mom first.
A childhood belief about skin

others believed things like this
- When i was little i used to think that a birth mark was the place on the body where you came out of the mother— bipbop
- I used to think that if you didn't have a birth mark you hadn't been born.— Kim
- I used to believe that my birth mark was a tea stain!Anon
- Untill I was about 15 I thought that the birthmark on Mikael Gorbachov's head was actually a map of the world.— Rob , Solihull
- I used to belief that the birth mark on my dad's leg was where he spilled his coffee... EVERY morning.— Liz
- when i was really young, i couldn't figure out why i can't get older than my older sister.— angela