>Polar bears being self-aware about their nature
>The bartender understanding the meaninglessness of life and death
>The bartender realizing that the bear that keeps coming in is the same bear every time
>The frog realizing that the bar he keeps coming to is the same bar every time
>The frog realizing that all of the visitors to the bar are the same people every time
>The bar smells like rotting flesh
>A meta-joke-explainer who doesn't understand the concept of meta-jokes
>Self-referential jokes
>A joke that is a list of all of its running gags
>The trillion scorpions killing the bartender because of his lack of humor