The very fact that he thought it was a funny joke tells you all you need to know. "Have fun being a cocktail waitress (we all know THEY suck, ammirite??) lol.

That's different from making a topical joke about blacks or asians, where the joke is meant to be over the top hyperbole, here though we have King laughing at the prospect of someone falling from grace, and defining that fall as someone in the working class.