But why are hats not allowed at the dinner table?
In the 20th century, hats were always worn when leaning the house as a matter of personal hygiene. The hat was a form of protection against industrial dirt.
Removing your hat during church, the pledge, and during dinner is a sign of respect. Removing your hat at the dinner table is a social norm and shows that you have manners.

According to Emily Post Institute, men can leave their hats on outdoors, at athletic events, on public transportations, in buildings such as post offices, and on elevators. However, a man should take their hat off when entering someone’s home, at the dinner table, while being introduced, at church, and at restaurants.
Even Tony Soprano agrees that no hats should be allowed at nice restaurants. Remember the episode?
When it doubt, just take your hat off! Were you allowed to wear a baseball cap at the dinner table growing up? Let us know in the comment section below!