How does a pun shift the listener from one meaning of a word to another?

A pun functions by utilizing a word in a way that suggests two or more of its meanings, or by using a word similar in sound to another, to create a humorous effect. In the context of human behavior and humor, this process relies on what is described as an "acoustic knot"—a linguistic bridge that ties together two disparate strings of thought.12

By using a single word or sound to anchor two different frames of reference, the pun forces the listener to mentally oscillate between these meanings. This collision of incongruous ideas is a fundamental mechanism of verbal humor; the listener is shifted from one meaning to another as the brain attempts to reconcile the conflicting logic or contexts presented by the word.2

While some consider puns a primitive form of humor due to their reliance on sound association, they are a classic example of how wit uses "conscious art" to manipulate language, creating a sudden, unexpected shift in the listener's perception that triggers laughter.32