When I was a kid I believed that everyone was given a new first name when they became an adult. It just seemed to me that kids had different names than adults.
A childhood belief about names

others believed things like this
- I believed we were little kids till we were 17, and at our 18th birthday we woke up as adults.— Hoppip
- I used to think that I was smarter than adults. Now I know kids are smarter than adults in many ways— Marshall M
- I used to believe that some first names were specifically for children and some were specifically for adults.— Marco
- I used to believe when adults grew up only 4' 9" or lower are still classified as kids.— Jorge
- I used to believe that school was a place kids go to get turned into adults.— Samantha
- I thought that kids' pee was yellow and adults' pee was clear.— Aretia