I used to think that interpol was an international flower delivery company, although I have no idea how I came to think this, it certainly confused me when, in films, someone would be asked to check an ID with a flower delivery company.
A childhood belief about police

others believed things like this
- I used to believe when ordering Chinese food the food and delivery man came from China— Dave
- i used to believe that a perrenial was a particular flower's name— Ducki
- When I was little I thought that a "wallflower" was a kind of flower that grew on walls.— A. Nonny-Muss
- I thought that the insurance company Aflac was owned by Ben AffleckAnon
- I used to think that a company had boats all over the world making waves, and airplanes making cloudsAnon
- I used to think it was against international law, religious principles, etc. To be born on Christmas Day. :PAnon