Until I was about 11 or 12 I thought that "prostitute" referred to a female criminal.
A childhood belief about criminals

others believed things like this
- I used to believe that a prostitute was like a prosecutor.— Not As Innocent Anymore
- i used to think that being a prostitute was a religion. (sort of like protestant i guess?)Anon
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- When i was little , i thought that a cat was a female dog.Anon
- at four, I thought my mother was female and me and my father were fee's Anon
- My brother once referred to the neighbor as a lesbian (she was Lebanese...)Anon