Janitor: You responsible for this head blood?
J.D.: Look, here's the bottom line: I am currently in possession of a note that would give me permission to have sex with a very beautiful woman, but I have no way of getting to her apartment.
Janitor: Then what are we waiting for. Get in. Come on! Let's go! Go, go, go, go!
[much later, the Janitor tosses J.D. out of the van in the middle of nowhere:]
J.D.: What are you doing!?
Janitor: It's been four years. How do you not get how this works?