Quote from Ross in The One with Russ
Russ: I know what your problem is. Ross: Oh, you do, do you? Russ: Mm-hm. You're jealous. Ross: Uh, of - Of what? Russ: You're jealous because I'm a real doctor. Ross: Hey, you're a doctor of gums. That's the smallest body part you can major in. It's like, day one, floss. Day two, here's your diploma.