This quote eloquently captures a paradox inherent in the concept of humor and entertainment, especially as embodied by clowns. Clowns are traditionally expected to bring laughter and joy, yet this reflection suggests that their primary role is not to be genuinely funny, but rather to juxtapose their awkwardness or absurdity with more meaningful or enjoyable experiences. The laughter they provoke is not so much from amusement but a response tinged with nervousness—a social mechanism to manage discomfort or uncertainty.

What resonates profoundly is the idea that clowns serve as a benchmark, a theatrical device to frame human experience. By enduring the discomfort or the lack of traditional humor represented by clowns, audiences might appreciate the value and richness of other events or interactions that follow. It explores an often overlooked angle on humor: that its efficacy partially depends on contrast and context.

In broader terms, the quote prompts contemplation about life's challenges and mundanities. Sometimes, discomfort or dissatisfaction with a particular state—as symbolized by the clown—enables us to recognize and cherish moments of true joy and fulfillment. The nervous laughter represents human complexity and emotional layering; laughter is rarely simplistic or solely about happiness. It's both a defense mechanism and a social signal.

In the context of Terry Pratchett's style and quoting from "Men at Arms," this insight fits well within his unique blend of wit, satire, and deep human observation. It encourages readers to reconsider assumptions about comedy, purpose, and emotional responses in everyday life and storytelling.