You're not thirsty, John. You don't want a drink. You don't want a drink!
9 seconds sound clip from the X Minus 1 - Mars is Heaven by Ray Bradbury classic radio dramaseries.
You can hear this line at 00:24:28 in the radio play.
Quote context
[...]
- Careful.
- Ed. We, uh, we wanted a drink of water, that's, that's all Ed.
- You're not thirsty, John. You don't want a drink. You don't want a drink!
- His face! It's changing. He's a Martian!
- Run!
- This way Horst! Horst where are you?
- Hello! Hello! Can you hear me, Earth! This is Captain John Black.
- The XR 53 calling from Mars. I've locked myself in the ship, but they've crippled it.
[...]