When I first became familiar as a child with the phrase "calling the law", which actually meant calling the police. I got the idea that "the law" referred to one particular government official.
A childhood belief about police

others believed things like this
- I used to think that the initials NYC stood for "nobody you're calling" Anon
- I used to believe that the phrase "Mamma Mia" referred to a girl named Mia.Anon
- From the Carpenters hit I always sang "calling octopus of interplanetary craft" instead of "occupants".— Paul
- When I used to see the sign 'police accident' I thought it meant that a police car had crashed.Anon
- I used to think that if someone looked familiar to me then I must also look familiar to them.— Preston
- I thought the phrase "At one's disposal" meant you should dispose of the person or thing.— Geirskogul