Zork: Nemesis (1996 Video Game)
Severed Head: Heads are parts of bodies. I am a head. Thus, it would be only logical to conclude that I must be part of a body.
Severed Head: I must also infer that a different part of my brain must be feeling rather... concerned about this issue right now.
Severed Head: Heh, reminds me of a joke: Knock knock. Who's there?... Is someone there?... What is this, some kind of a joke? A JOKE!