Loitering with Intent, Muriel Spark
This novel opens in a graveyard, involves the machinations of a group of pompous middle class twits who attend meetings of the suspicious and cultish Autobiographical Association, has a plot twist that hinges on a young novelist's friendship with an elderly woman who wets herself, swears a lot and helps the novelist steal manuscripts, acts as a commentary of the genre of autobiography, notable Newman and Cellini, and includes jokes like this:
He told me about a girl he had met who had an uncanny habit of sneezing if she drank inferior wine, and as a consequence of this talent got a job with a wine- merchandising firm as a taster.
There's also a car accident, an affair, commentary on the way writers produce novels, implicit moralising about plagiarism, and some first-class piss-taking out of social snobs. It's a perfect follow on from The Comforters. It's a great satire of people's self-involvement, lack of understanding of fiction, and sexual hypocrisy.
All of that in fewer than 200 pages.