In comedy, a callback is when a comedian refers back to a joke they told earlier in their act. It's like an inside joke with the audience: everyone remembers the funny moment from before, and bringing it up again makes it even funnier because you're all in on it together.

Imagine a comedian starts their show with a story about accidentally wearing mismatched shoes to an important meeting. Later, while telling a completely different story about their disastrous cooking attempt, they mention, “At least I had the right shoes on this time.” The audience laughs extra hard because they remember the earlier joke. That second reference is the callback.

Callbacks work in other forms of storytelling too. In movies and TV shows, writers use callbacks by referencing earlier scenes or jokes. In The Incredibles, the line “No capes!” becomes funnier each time it's repeated because we remember what happened the first time. In Toy Story, Buzz Lightyear's “falling with style” callback at the end connects beautifully to Woody's earlier mockery.

The callback creates a satisfying feeling of things coming full circle. It rewards people for paying attention and makes them feel clever for catching the reference. Outside entertainment, people use callback to describe any reference to something mentioned earlier, like when your teacher says, “Remember what we learned about fractions last month? We're going to use that concept again today.”