Chandler: You have to go to a sleep clinic.
Joey: Look, I told you. I'm not going to any clinic. I don't have a problem. You're the one with the problem! You should go to a "Quit-being-a-baby-and-leave-me-alone" clinic!
Chandler: They don't have those.
Joey: Yeah, they do... Quit being a baby and leave me alone! There, you just had your first class.