I have a joke about construction.

This classic one-liner builds its foundation (Review) on a simple but brilliant piece of wordplay. The punchline cleverly plays on the double meaning of the phrase "working on it." In one sense, the comedian is still trying to think up the joke they promised. In the other, the phrase itself describes the very act of construction, making the punchline the completed joke in disguise. It subverts your expectation for a traditional setup-punchline structure about tools or blueprints and instead delivers a meta-joke about the process of creation itself.

The humor gets an extra boost from our shared, real-world experience with construction. We’ve all seen that one building or road project that seems to be perpetually "in progress," with orange cones and machinery sitting around for months on end. This one-liner perfectly mirrors that feeling of incompletion. The joke itself becomes a tiny, never-finished project, which is what makes its simple twist so satisfying and relatable.