Quote from Ross in The One with Ross's Teeth
Ross: Wow, cool poster. Or should I say, "groovy poster"? So ... where were we? Hillary: Are those your teeth? Ross: Oh. You can see them, huh? Hillary: Yes. They're insanely white. Ross: I did that for you. Hillary: What's the matter with you? Ross: What's the matter with me? You've got a black light. It's 1999!