There is a superstition associated with hats saying that a hat left on a bed or a table brings bad luck. When a hat is left on the bed it is said to bring a quarrel into the house by the end of the day.
One possible explanation for these superstitions is that they were created when lice were more prevalent. Keeping hats off tables and beds was a way of preventing lice from spreading. There is also a supernatural explanation claiming that evil spirits live in the hair. Other hat superstitions include the belief that wearing a hat inside brings headaches and that women who wear hats in church receive bad luck.