When I was a kid I called the articulated buses (the ones that are long and bend in the middle) "accordion buses" and sincerely believed that giants would come to our city and actually play the buses as accordions.
A childhood belief about buses

others believed things like this
- I used to believe that "according" meant playing the accordion, since it sounded like accordion. — According
- I used to believe that everyone on earth was just really dolls for giants to play with.— Chelsea
- My mom used to believe that the San Francisco Giants baseball team were actual giants.Anon
- I used to believe that accord was short for accordionAnon
- I used to believe that electricity was manufactured in a factory in a place called 'Electriz City'.— Sally
- When I was little I used to belive that girrafes were made to play baseball because they had long necks— Matt