Here are three key characteristics of IMPORTANT PEOPLE:
First--IMPORTANT PEOPLE are always in a hurry. Their time is valuable, so they can't waste it standing in line, holding doors or talking to unimportant people. They aren't rude; they're IMPORTANT!
Second--IMPORTANT PEOPLE are always holding a clipboard. I'm not sure what is on it--maybe the phone number of the local Dunkin DoNuts?
Third--IMPORTANT PEOPLE carry pagers. They need to be accessible all the time, so they carry multiple pagers with duplicating functions. The more pagers they carry, the more IMPORTANT a person is! If your pants sag indecently from the weight of all your pagers, you are VERY IMPORTANT!