[Mettaton is vain. He's conceited. Arrogant. That much is true. Keats would agree with that any day and throw in several more complaints on top of it.]

[He doesn't know why it irks him to hear that other people are calling him that.]

Haven't they realized what you're trying to do for them? I mean, if they're taking you at face value...

[He pauses. He's...done just that, hasn't he?]

[Wow, that's not a nice feeling to feel.]

Anyways, what kind of entertainment do you do, anyways? I know you sing.