Bart: Hey, tell me, Doc, a man who builds up a practice doesn't have much time to concentrate on the finer points of poker playing, does he?
Holliday: Ah, they still play…(lowers voice) They still play the same undergraduate game, but the Doc Holliday School For Happy Losers opens any minute.
Bart: Well, that's fine. I'll see you just as soon as school is over, Doc.
Bart: To pick up the $2,000 you owe me. Or take it in gold inlay or bridge work or what have you. Oh, incidentally, Doc, don't run out on me this time, will ya?
Holliday: (Doc raises his right hand as if to swear) Why…
Bart: (Bart lowers Doc's hand and puts a drink in it) Oh, swearing does not become you, Doctor.