(revival)
The scene was so preposterous that many believed it to be an ill-advised attempt at reviving the declining ratings of the flagging show... since then, it has become a metaphor that has been used by U.S. TV critics and fans to denote the point at which the characters or plot of a TV series veer into a ridiculous, out-of-the-ordinary storyline.

The term Jumping the shark alludes to a scene in the TV series Happy Days when the popular character Arthur "Fonzie" Fonzarelli, on water skis, literally jumps over a shark.

A phase in a relationship to rekindle romance after a betrayal or tort action.