How do you classify the silly elephant jokes back in the 70’s?

Q: Why did the elephant paint its toenails red?

A: So it could hide in a cherry tree.

Q: How can you tell that an elephant is in the bathtub with you?

A: By the smell of peanuts on its breath.

Q: Why does an elephant have round flat feet?

A: So that it can walk across lily pads.