A pun is a form of wordplay that uses the multiple meanings of a word or similar-sounding words to create a humorous or clever effect. It involves a play on words where a word or phrase is used in a way that suggests different meanings or interpretations. For example, in the phrase "I used to be a baker, but I could not make enough dough", the pun is on the word "dough", which refers both to the mixture used to make bread and slang for money. This play on words adds humor by linking two different meanings of the same word. Puns are often used to add wit or a clever twist to writing and speech.