My mother has this friend whose last name is Stalker, so when I heard people talking about stalkers, I thought they meant my mom's friend and people related to her.
I used to believe that if you “burnt” a cd on to ITunes on your computer, so you could listen to it on your IPod, you were violating copyright rules.
When I was five, I tried to report myself to the police because I'd drawn on the furniture.
I used to believe opening a fruitsnack package from the wrong end will send you to jail.
As a kid I didn't realize the severity of getting arrested. I though it was like time-out but for grown-ups; so I figured pretty much everyone went to jail at least once in their lives. I was shocked when I asked my parents if they had ever been to jail and they said no.
I used to believe that there was something called the grammar police and if you say a lot of things wrong(like saying axe instead of ask), the grammar police will come to your house and give you a ticket for bad grammar. I got scared and tried not to make a mistake while speaking!
I used to believe that, if you did ANYTHING which was not allowed (for instance, if you touched something at a shop which had a "do not touch" sign), the police come to get you, and you'd spend a long time in jail just because of that.
I'm from Spain, and here in my country we have a "Civil Guard" (which is a kind of police that takes part in militar-related stuff and mostly helps out people at the countryside), and there was also a Civil War, which took place a bit before WWII. As a kid, I used to mess up both terms (since they sound very similar in Spanish, too), and I used to think that the Civil War was just a time when the Civil Guard was so busy all the time.
When I was a young girl I used to believe that drugs were sold in drugstores so I never dare get into one.
When I was a little kid. I thought that police officers were a gang of mean people who bullied others.