Why don't old people like change?

This joke is a fantastic example of a pun, relying entirely on the dual meaning of the word "change." When you first hear the setup, your mind likely goes to the idea of older individuals being resistant to new ideas, technologies, or societal shifts. This is a common, though often stereotypical, perception that many people hold. The humor builds on this expectation, setting up a familiar scenario.

However, the punchline cleverly pivots away from the abstract concept of change and instead refers to its monetary form: the coins we carry. The idea is that after decades of hard work and "making dollars" – earning the more substantial bills – the smaller, less valuable "change" might not be as appealing. It’s a playful twist that uses a common idiom about earning money to create a funny and unexpected resolution, turning a perceived character trait into a literal financial preference.