The best joke in the world is me.
Don't say that you're not a joke. Jokes have meanings.
The Best One
Explanation
The user is saying that they are a joke, which is a form of self-deprecation. They then make a statement that implies that since they are a joke they must have meaning. It's a bit of a philosophical take on the idea of being a joke.
Depressed Hooman
i feel u.