The phrase was coined in 1985 by radio personality Jon Hein in response to a 1977 episode from the fifth season of the American sitcom “Happy Days”, in which the character of “Fonzie”(Henry Winkler) jumps over a live shark while on water-skis.
Basically any time a show goes on too long and tries to introduce a stupid, attention-getting gimmick to try to stay relevant.
https://en.wikipedia.org/wiki/Jumping_the_shark
Basically any time a show goes on too long and tries to introduce a stupid, attention-getting gimmick to try to stay relevant.