Depends What You Mean By “Flirt”
8. Don’t fall for the slick, dandified cake eater — the unpolished gold of a real man is worth more than the gloss of a lounge lizard.
9. Don’t let elderly men with an eye to a flirtation pat you on the shoulder and take a fatherly interest in you. Those are usually the kind who want to forget they are fathers.
10. Don’t ignore the man you are sure of while you flirt with another. When you return to the first one you may find him gone.
The last three rules of Washington DC’s Antiflirt Club of the 1920’s are the best, but really they’re all pretty good. [Thanks, Jon!]