The eponymous shaggy dog story serves as the archetype of the genre. T... - dofaq.co
shaggy dog story

The eponymous shaggy dog story serves as the archetype of the genre. T...

wikipedia - 15 Sep 2021
The eponymous shaggy dog story serves as the archetype of the genre. The story builds up a repeated emphasizing of the dog's exceptional shagginess. The climax of the story culminates in a character reacting to the animal, stating "That dog's not so shaggy." The expectations of the audience that have been built up by the presentation of the story, both in the details (that the dog is shaggy) and in the delivery of a punchline, are thus subverted. Ted Cohen gives the following example of this story:

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