1) Walking very slowly. If you are walking with a friend, she will usually walk at your pace, or you will compromise. Why is it then, that some golfers walk at a snail's pace, as if there was all the time in the world?
2) Talking or slamming clubs back in the back while you are swinging. When someone is concentrating, isn't it proper etiquette not to interrupt or startle them?
3) Shaving a couple of strokes off their real score. Come on, who are you cheating, really? Cheaters never prosper is a good rule in all of life, isn't it?
I only ask that you use your common sense. It makes the day so much more fun for everyone!