"Now a second-order vain person is a vain person who's also vain about appearing to have an utter lack of vanity. Who's enormously afraid that other people will perceive him as vain. A second-order vain person will sit up late learning jokes in order to appear funny and charming, but will deny that he sits up late learning jokes. Or he'll perhaps even try to give the impression that he doesn't regard himself as funny at all."