(Using peanuts as a threat, Bart forces Skinner to do things against his will at Comic Book Guy's shop.)
Principal Skinner: (Clears throat) Excuse me. I'm supposed to stand in your store window and breast-feed Bilbo Baggins.
Comic Book Guy: Your cowering suggests that Bart has found your kryptonite.
Principal Skinner: Kryptonite? What's that? The "ite" suffix suggests a mineral.
Comic Book Guy: I do not know whether to laugh or cry at your ignorance. I shall laugh. Ha, ha! Kryptonite is Superman's greatest weakness.
Principal Skinner: Wait, maybe Bart has a kryptonite!
Comic Book Guy: Perhaps. But for now you may suckle your Baggins.
(Comic Book Guy hands a Bilbo Baggins doll to Principal Skinner.)