Dr. John 'Doc' Holliday: I'm a gambler. Money's just a tool of my trade.
Wyatt Earp: Of course, you will guarantee you won't lose.
Dr. John 'Doc' Holliday: I never lose. You see, poker's played by desperate men who cherish money. I don't lose because I have nothing to lose, including my life.
Wyatt Earp: We'd like you to come to the wedding, Doc, - if it doesn't interfere with your poker.
Dr. John 'Doc' Holliday: I'm not good at weddings - only funerals. Deal me out.