I call this one The Campfire Song Song
A brief Spongebob art history lesson

In the episode “Artist Unknown,” the figures Spongebob carves out and Squidward accidentally creates are an obvious allusion to Michelangelo’s David.

Michelangelo’s influence is further evident in Squidward’s wise advice: Visualize the sculpture within. The words seem to be an echo of Michelangelo’s self-described process of “liberating the figure imprisoned in the marble.”

Da Vinci’s Vitruvian Man also makes an appearance in the background.

Knock-knock jokes!
Spongebob: Hey Squid, knock-knock!
Squidward: Who's there?
Spongebob: ... I AM!

Squidward: People talk loud when they want to act smart, right?

Plankton: CORRECT!

In case you forgot, here’s how things work: I order the food, you cook the food, then the customer gets the food. We do that for 40 years and then we die.
Squidward