I used to believe that if somebody manages to break into someone's house, they are legally entitled to stay there, and that's why people lock their doors.
A childhood belief about criminals

others believed things like this
- I used to believe Serial killers would break into your house and stab/'kill' your cereal.— mary
- I used to believe that if you touched Chinese people, they would break.— Christian
- When I was young I thought people smoked to stay warm.— Phil Stam
- I was told as a kid that if you kept stuffing a Big Buddies (bubble gum)I would get lock jaw.— Dawn
- I thought a contract killer was someone who kills people who break a contract— Nate
- I used to believe that the dust on top of doors was poisonous.— draconid