This is one of the most intelligent use of literary devices that I've read up to date. Vonnegut himself is a character in this fiction as the creator of this universe (which he literally is) and foreshadows how he has control over the fates of the characters in this novel which is a metaphor for how much devoid of free-will their characters are.

Besides that Kilgore Traut which was had a significant characterization in 'Slaughterhouse 5', in this novel, is a character so remotely close to the writer-counterpart of Vonnegut himself and there are lots of sci-fi stories that Traut has written and the gest is provided which along with the main story renders some examples for many of the recurring themes i.e. racism, sexism, pollution and advertisement. The title itself is a huge punchline for any cereal-meal ad and has not any other significance in the novel.

Overall, this one doesn't have a real plot but although the reader is tricked to chase one and the end gets some really real revelations. I think this novel was built to be flawfully devoid of a story and despite the fact, Vonnegut comes up with a product nonetheless splendid.

Did I say a product?

On the expected hand, Dwayne Hoover is our protagonist which represents typical America with its nature of capitalistically owning everything and most of the incidents revolve around him. However, there are a lot of characters in this book who define an entire spectrum of a generation in America, all devoid of any free will, like us all, in a city which is called "the asshole of the universe".