We see someone feeding their cat, and the cat eats some of the food and then comes over to the owner and flops in front of them in that "pet me" manner cat lovers know so well. During this, we hear an altered version of the 1950s song: "At The Hop", singing:
Meow meow meow meow, meow meow meow meow,
Meow meow meow meow, meow meow meow meow,
Let's flop!
When they flock around the bowl,
And they swallow it down whole you get the flop, (Flop, flop, flop!),
When the can starts spinnin' and they're eating their chicken get the flop, (Flop, flop, flop!),
It's the cat sensation that's making them playful, it's the flop! (Flop, flop, flop!),
Let's go do the flop,
Let's go do the flop, (Oh kitty),
Let's go do the flop, (Oh kitty),
Come on,
Let's go do the flop!
This is "At The Hop", by Danny and the Juniors, from 1958:
https://www.youtube.com/watch?v=k6EeObPCMR8