Humping the shark 

The act of reviving or perpetuating a once relevant TV program, movie franchise, etc. that has already passed its peak (i.e., jump the shark) in the selfish hope of getting more money or compensation (e.g., fame) out of it. Ultimately, the perpetrators/propagators get a nasty surprise when they find out the "shark" is no longer fit for "humping".

"Did you hear they're making a film about golden retriever puppies that play rugby? It's called 'Scrum Buddies'."
"Wow, those guys sure are humping the shark with all the 'Buddies' movies."

Humping the shark by HomeSchool April 28, 2013

humping the shark 

Humping the shark means having sex with a shark.

Not a recommended activity.

When Gus came out of the water he was all chewed up.

"What have you been doing?" asked Mungo.

"Humping the shark," said Gus, tucking his badly mauled willy back into his trunks.

humping the shark by scodder June 2, 2010