"Sometimes you must try other people's clean silverware, as part of the fun of eating out," advises Carol the waitress (Helen Hunt). She waits on him, but she doesn't like him, and when he makes a disparaging remark about her asthmatic son, she makes him take it back, or she will never, ever serve him again. 

 

Since she's the only waitress who will serve him, and since this is the only restaurant he will eat in, he backs down. (Later, when he's finally thrown out of the restaurant, there's applause from the regulars.)