In the sketch ‘The Shoe Store’ from ‘The Carol Burnett Show’ disgruntled shoe salesman Don Rickles can’t help but freak out when serving his customers. Boss Harvey Korman gives him one more chance, but Don blows it after encountering another obnoxious customer, played by Nanette Fabray. By the end of the sketch, Harvey and Don can’t keep it together. They end up laughing at each other’s jokes. The audience loves it when the actors break character in this memorable sketch.