A good joke to cheer a person up is, "What do you call a snowman wearing sunglasses?" The answer is, "A puddle." This common type of joke uses a straightforward question to set up a humorous twist in the answer.
Jokes are generally used to entertain and inspire laughter from an audience. Human beings have been telling jokes since around 1900 B.C. Numerous studies have been made to understand why people laugh at jokes. The philosopher Henri Bergson suggested that laughter came about to make social interaction possible among human beings. Jokes and comedy are also used to raise people's awareness of social and political issues. This type of comedy is called "satire."