So, in RPGs, you can refuse to move the story on by not advancing any text box that pops up. If this happens, the world will be on an indefinite loop, until you choose to advance that text box.
Basically, this is the bartender "double entendre" joke, but takes place in a RPG with a procrastinating protagonist.
In this situation, the protagonist just drops their script with the joke on it and stands there for years. This symbolizes their refusal to advance the joke in the metaphorical text box, and therefore the story. After years, the bartender gets fed up and pleads them to advance the joke, but they still refuse. This is why the protagonist never gets the double entendre.
At least, that is what I can gather from this.