Where I live (near Detroit) there are several nearby streets with names like 9 Mile and 8 Mile. When I was younger I thought the names referred to how long the streets were - 9 Mile was 9 miles long, etc. I thought all streets were named like this!
A childhood belief about places

others believed things like this
- I used to believe a mile was the distance between telephone poles.— Allegra
- As my parents had given me a name, I thought that it was up to me to give them names tooAnon
- I used to wander what my name would be in other languages. I thought that names worked the same way as words. — Simon
- For along time I thought the Middle East and Eastern Europe were just different names for the same place!— Helllowerer
- I thought that since my grandpa and my dad's names are both David, than David Bowie must be my aunt's son.Anon
- At the age of around five, I realized that my mum's and dad's names were not mum and dad!— yelloworpurple