Growing up I was told "Tintin" and "The Smurfs" were from France! They're actally from Belgium!
A childhood belief about nationalities

others believed things like this
- i used to think belgium was a myth.Anon
- I used to believe that smurfs were real. I never ate mushrooms. I still don't eat them.Anon
- i used to believe that the smurfs lived in ordinary mushrooms and i would never eat them!!!— eimear
- my bro used to belive there were smurfs in the atms passing out money— L
- When I was a child I used to believe that smurfs lived in the mushrooms. So I didn't use to eat.— Ezgi
- i used to think France was in the united states
— TY