This quote likely serves as a memorable element within the plot, capturing the reader's attention while providing a break from the main action. J.D. Robb's work often explores complex themes, so such a line can provide comic relief, showcasing the dynamics between characters in a relatable manner.
Overall, the phrase encapsulates the clever writing style of Robb, illustrating how mundane tasks can take on a humorous light through clever phrasing and character interactions.