Breakfast of Champions, or Goodbye Blue Monday is a 1973 novel by the American author Kurt Vonnegut. Set in the fictional town of Midland City, it is the story of "two lonesome, skinny, fairly old white men on a planet which was dying fast." One of these men, Dwayne Hoover, is a normal-looking but deeply deranged Pontiac dealer and Burger Chef franchise owner who becomes obsessed with the writings of the other man, Kilgore Trout, taking them for literal truth. Trout, a largely unknown pulp science fiction writer who has appeared in several other Vonnegut novels, looks like a crazy old man but is in fact relatively sane. As the novel opens, Trout journeys toward Midland City to appear at a convention where he is destined to meet Dwayne Hoover and unwittingly inspire him to run amok.
Vonnegut sprinkled plot descriptions for Trout's stories throughout the novel. He also filled the book with some of his own simple felt-tip pen drawings, intending to illustrate various aspects of life on Earth.
The title, taken from the well-known slogan for Wheaties breakfast cereal, crops up in a key scene late in the novel when a waitress, apparently ironically, says "Breakfast of Champions" each time she serves a customer a martini. Vonnegut, in his typical sarcastic manner, mocks the legal and copyright systems as he notes meticulously that Breakfast of Champions is a registered trademark of General Mills, Inc. for its breakfast cereal products, and that his use of the term is not "intended to disparage their fine products."