Frank Slade: I want it wall to wall with John Daniels.
Charlie Simms: Don't you mean Jack Daniels?
Frank Slade: He may be Jack to you son, but when you've known him as long as I have... That's a joke.
When Charlie is talking to Colonel Slade, the Colonel mentions how he calls the whiskey "John" Daniels because he has known him for a long time. In fact, Jack Daniel's real name is not John, it is Jasper Newton Daniel.