From Dr. Strangelove

Ripper: [with his arm around Mandrake] “Mandrake, have you ever seen a commie drink a glass of water?”

Mandrake: “No, Jack. I can’t say that I have.”

Ripper: “Vodka. That’s what they drink, isn’t it? Never water?”

Mandrake: “Well, I believe that’s what they drink, Jack. Yes.”

Ripper: “On no account will a commie drink water? And not without good reason?”

Mandrake: “I don’t quite see what you’re getting at, Jack.”

Ripper: “Water. That’s what I’m getting at. Water, Mandrake. Water is the source of all life. Seven-tenths of the earth’s surface is water. Why, do you realize that 70% of you is water?”

Mandrake: [nervously, beginning to suspect that Ripper really has flipped his noggin] “Odd.”

Ripper: “And as human beings, you and I need fresh, pure water to replenish our precious bodily fluids.”

Mandrake: “Yes.”

Ripper: “Are you beginning to understand?”

Mandrake: [laughing pathetically] “Yes.”

Ripper: “Mandrake. [hugs him closer] Mandrake, have you ever wondered why I drink only distilled water, or rain water, and only pure grain alcohol?”

Mandrake: “Well, it did occur to me, Jack, yes.”

Ripper: “Have you ever heard of a thing called fluoridation, fluoridation of water?”

Mandrake: “Yes, I have heard of that, Jack, yes.”

Ripper: “Well, do you know what it is?”

Mandrake: “No.”

Ripper: “Do you realize that fluoridation is the most monstrously conceived and dangerous commie plot we have ever had to face?”