I didn't know what the phrase "jumping the shark" meant- looked it up- made sense in the context presented.
Did/do you know what it meant/means?
Oddly, it was coined in 1985, but I never heard it used before.
My initial reaction was, that because THINK has young children, and works with students at the age when they create societal terms (and other things) for the future (their present), maybe he simply can't not have heard certain expressions from the regularly used, "hip" language of the youth- it is infectious (dude!)!
Anyway- it works!
Go ahead- try it on somebody- then duck!!!