An astonishing number of people seem to be unaware of this common, or so I thought, expression.
Happy days.
i had heard of it myself.
i like the simpsons take on it.....
"The Simpsons clip show "Gump Roast" (DABF12) ends with many jumping-the-shark allusions, including a shot of Homer water skiing over a shark. It includes a song in which Matt Groening and his staff answer to fans worried over comments he made that he was running out of ideas, saying "Have no fears, we got stories for years." They then give examples of supposedly upcoming episode premises such as Marge becoming a robot, Bart owning a bear, Moe getting a cell phone, and "a crazy wedding where something happens".