I blog earlier about "nukin the fridge", a point when "the characters or plot veer into an over-the-top level of the ridiculous or incredible" also refering to a scene in the film Indiana Jones and the Kingdom of the Crystal Skull"

I didn't know "jumpin the shark", "that point in a TV show or movie series' history where the plot veers off into absurd story lines or out-of-the-ordinary characterizations" was also refering to an actual scene. he phrase refers to a scene in Happy Days, sept. 1977. In the third of the three parts of the "Hollywood" episode, Fonzie, wearing swim trunks and his trademark leather jacket, jumps over a penned-in shark while water skiing.

The phrase refers to a scene in a three-part episode of the American TV series, Happy Days, first broadcast on September 20, 1977. In the third of the three parts of the "Hollywood" episode, Fonzie (Henry Winkler), wearing swim trunks and his trademark leather jacket, jumps over a penned-in shark while water skiing.