Jimmy Carr hosts the second of six comedy masterclasses in which he discusses his passion for all aspects of comedy and plays some of his favourite comedy clips Tonight, he takes a look at the theory of jokes and plays clips from the likes of Les Dawson on being healthy, Lee Evans on forgetting stuff, Frankie Howerd on a memorable visit to the doctors, and Michael McIntyre on relieving himself in the sea. All these clips and more are supplemented by Jimmy's witty and anarchic take on the world of comedy.