Up until recently I thought that arson was a flammable chemical, like gasoline, that criminals used to start fires.
A childhood belief about criminals

others believed things like this
- I used to believe that arson was a flammable liquid, not the act of deliberately setting fires.— Joey Schwartzman
- I thought that hot water couldn't put out fires.— Matt
- As a kid, I thought that the character Kimiko Tohomiko from Xiaolin Showdown's name was Chemical. — Chase Young Fangirl
- I used to beleive that gasoline was made from dinosaurs.Anon
- When the police are talking about "rap sheets," I thought that the criminals were making rap music.Anon
- I used to believe that rocket ran on gasoline and that in order to save gas, we should end the space program.Anon