Quote from : Back to the Future Part III Movie

Bartender: Emmett! What can I get you? The usual?
Doc: No, Chester, I'm gonna need something a lot stronger than that tonight.
Bartender: Sarsaparilla?
Doc: Whiskey, Chester.
Bartender: Whiskey? Emmett, are you sure? You remember what happened to you on the 4th of July?
Doc: Whiskey.
Bartender: [gets out a whiskey bottle and a shot glass, and pours it] Okay, I ain't your papa. I just don't want to see you do the wrong thing.