Glory
Someday you're going to flip on the telly (we're in England for the purposes of this sentence) and see some former student of yours being elected to public office, winning an Academy Award, or performing a hostile takeover of a large, multinational corporation, and you are going to be able to think to yourself: I had a little something to do with that. And then you'll probably call up your former student and ask for your cut. Because teachers always seem to think that's a pretty good joke.