There are several types of jokes, each with its own style and structure. One common type is the one-liner, which delivers a quick punchline in a single sentence. Another popular form is the pun, which plays on words to create humor through double meanings. Knock-knock jokes are a classic format that involves a call-and-response structure, often appealing to children. Additionally, observational humor focuses on everyday situations, highlighting the absurdities of life. Each type of joke serves to entertain and elicit laughter in different ways.