1. Not looking up from you phone while you're ordering food.
2. Walking on the wrong side of the sidewalk or walking in groups that take up the whole sidewalk.
3. Not holding the door for people who are right behind you.
4. Answering the phone by saying, "what?".
6. Flossing your teeth with your fingernails in public.
7. Treating bookstores like your own personal home library.