I tell you it's a new scientific theory. People only think coffee keeps them awake. Those kind of people are nervous wreck and couldn't sleep anyway.
8 seconds sound clip from the Christmas in July (1944) classic radio play.
You can hear this line at 00:07:01 in the radio play.
Quote context
[...]
- I know what it says, I just don't understand it.
- Well, a kid of two could understand it.
- Now that's simple enough, isn't it? Coffee makes you sleep!
- Well, he says it makes you sleep. He's a Viennese doctor.
- Coffee keeps you awake. That's a well known fact! Why are you so pig headed about it?
- So I say if you don't sleep at night it isn't the coffee it's the bunk. Do you get it?
- You guess so, what's it mean?
- Yes. But do you get the play on words?
- Oh Jimmy, you don't need a play on words.
[...]