Be forwarned: the following books range from wryly funny or lightly humorous to understated and ironic, but rarely to roll-on-the-floor-laughing outloud; although Quinn Cummings came closest to the latter. Her writing tends to be the kind one has to read aloud to other people in the room so they can laugh too.
Get Real, a Dortmunder Mystery by Donald Westlake
Notes from the Underwire by Quinn Cummings
Burgler in the Rye, a Bernie Rhodenbarr mystery by Lawrence Block
The Family Man by Elinor Lipman
How I Became a Famous Novelist by Steve Hely