where did the expression jump the shark come from
Jumping the shark Popularized by radio personality Jon Hein in the 1990s and early 2000s, the phrase derives from a scene in a fifth-season episode of the sitcom Happy Days in which the character Fonzie jumps over a shark while on water-skis.[2][3][4] This was deemed a ratings ploy, for it was outside the original thrust of the sitcom.