How do you make an octopus laugh?

How do you make an octopus laugh

Ink and watercolour on paper, 8×10 inches
This drawing is available SOLD.

This joke is courtesy of my dear friend Carolyn, who enjoys terribly cheesy jokes as much as I do. (Evidence of previous enjoyment of terribly cheesy jokes: What’s brown and sticky?)

I may do a series of terrible jokes as drawings. I just may. So, this in mind, if you have a ridiculous joke you’d like to see eventually made into a ridiculous drawing, do let me know, yes? Yes.