Frasier: Niles. Niles, I've done it. I have found his Achilles Heel.
Niles: Ah, who's?
Frasier: Clint's. Oh, I just heard him singing, the man is completely tone deaf. He's about to launch into a rendition of "Isn't It Romantic" that will simply peel the enamel from your teeth.
Niles: Are you sure you want to let him do that?
Frasier: What do you mean?
Niles: Well, you have your victory, you're a wonderful singer. Isn't it enough to know that? Do you really need to see him humiliate himself?
Frasier: ... Yes.