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Jumping the shark is an idiom used to describe the moment in the evolution of a television show when it begins a decline in quality that is beyond recovery."
"In its initial usage, it referred to the point in a television program's history when the program had outlived its freshness and viewers had begun to feel that the show's writers were out of new ideas, often after great effort was made to revive interest in the show by the writers, producers, or network."
