Have you heard of the restaurant Karma?
There is no menu because you only get what you deserve.
Listen up, buttercup. This joke is about karma, which is like, what goes around comes around. So, this restaurant called "Karma" doesn't have a menu because you get whatever you deserve, you know? Basically, if you're a jerk, you might get served a plate of garbage. And guess what? People like you are known to watch Rick and Morty, but not understand the jokes.