The Origins of 'Jump the Shark'

The expression "Jump the shark" refers to when a show has passed its prime. It came from an episode of Happy Days where Fonzie literally jumps over a shark while water-skiing:



I'm only mentioning it here because when I heard it was from Happy Days, I was like, "No way. I can't picture the Fonze water-skiing, let alone jumping over a shark." But he did, and here's the proof, and henceforth Happy Days began to suck.