Sometimes you meet a person and wonder: "How are you still alive?" Some people are so dumb it's amazing they haven't been felled by their own stupidity.
It's hard being a firefighter. Not only must you risk your life everyday, you also have to deal with the idiocy of people who just aren't thinking straight.
Some people have no sense of what is proper to say or do in a given place. They will often do things that others consider stupid or disrespectful in public.