A joke is a short story or short series of words spoken or communicated with the intent of being laughed at or found humorous by the listener or reader. A practical joke differs in that the humour is not verbal, but mainly visual (e.g. putting a custard pie in somebody's face).
Jokes are performed either in a staged situation in front of an audience, or informally for the entertainment of participants and onlookers. The desired response is generally laughter, although loud groans are a common response to some forms such as puns and shaggy dog stories.
Laughter, the intended human reaction to jokes, is healthful in moderation, uses the stomach muscles, and releases endorphins, natural happiness-inducing chemicals, into the bloodstream.
One of the most complete and informative books on different types of jokes and how to tell them is Isaac Asimov's Treasury of Humor (1971), which encompasses several broad categories of humor, and gives useful tips on how to tell them, whom to tell them to, and ways to change the joke to fit one's audience.
Professional humor includes caricatured portrayals of certain professions such as lawyers, and in-jokes told by professionals to each other (e.g. Medical humor).
Mathematical jokes are a form of in-joke, generally designed to be understandable only by insiders.
Ethnic jokes exploit racial stereotypes. They are often racist and frequently offensive. Ethnic jokes are common, for example:
The English also tell jokes starting "an Englishman, and Irishman and a Scotsman..." which exploit the supposed parsimony of the Scot, stupidity of the Irish, or some combination.
Racially offensive humor is increasingly unaccaptable, but there are similar jokes based on other stereotypes such as blonde jokes.
Religious jokes fall into several categories:
Self-deprecating or self-effacing humor is superficially similar to racial and stereotype jokes, but involves the targets laughing at themselves. It is said to maintain a sense of perspective and to be powerful in defusing confrontations. Probably the best-known and most common example is Jewish humor. The egalitarian tradition was strong among the Jewish communities of Eastern Europe in which the powerful were often mocked subtly. Prominent members of the community were kidded during social gatherings, part a good-natured tradition of humor as a leveling device. A similar situation exists in the Scandinavian "Ole and Lena" joke.
Self-deprecating humor has also been used by politicians, who recognize its ability to acknowledge controversial issues and steal the punch of criticism - for example, when Abraham Lincoln was accused of being two-faced he replied, "If I had two faces, do you think this is the one I’d be wearing?".
Dirty jokes are based on taboo, often sexual, content or vocabulary. Many dirty jokes are also sexist.
Other taboos are challenged by sick jokes and gallows humor; to joke about disability is considered in this group.
Surrealist or minimalist jokes exploit cognitive dissonance, for example: Q: What's red and invisible? A: No tomatoes..
Some jokes require a double act, where one respondent (usually the straight man) can be relied on to give the correct response to the person telling the joke. This is more common in performance than informal joke-telling.
A shaggy dog story is an extremely long and involved joke with a weak or completely nonexistent punchline. The humor lies in building up the audience's anticipation and then letting them down completely. The longer the story can continue without the audience realising it is a joke, and not a serious anecdote, the more successful it is. Shaggy jokes appear to date from the 1930s, although there are several competing variants for the "original" shaggy dog story. According to one, an advertisement is placed in a newspaper, searching for the shaggiest dog in the world. The teller of the joke then relates the story of the search for the shaggiest dog in extreme and exaggerated detail (flying around the world, climbing mountains, fending off sabre-toothed tigers, etc); a good teller will be able to stretch the story out to over half an hour. When the winning dog is finally presented, the advertiser takes a look at the dog and states: "I don't think he's so shaggy".
See category:Jokes and category:Humor
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