Jump the shark
Meaning
Reach a point where something loses credibility.
Usage
Used for cultural phenomena past their peak.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Refers to a TV episode where Fonzie jumped a shark on water skis.
Coined in the 1980s and popularized on the Internet.