Dr. Cox: How much does this guy smoke?
J.D.: I dunno.
Dr. Cox: You realize, of course, it's your attention to detail that impresses me most. How many packs a day, genius?
Will: Half a pack.
Dr. Cox: Oh, I'm sorry, I phrased the question wrong. How many packs a day... really.
Will: Eleven. Now you don't know where I'm coming from!
(Cox whistles threateningly)
Will: Two or three packs.
Dr. Cox: Well, let's hear it...
J.D.: Oh, I don't smoke, so...zero packs!
Carla: What tests have you ordered?
J.D.: Oh. I know, I was just totally kidding with you.
Will: He was...we're all in on it.