Look, kid, I promise you, the live population of this planet is nil plus the five of us.
6 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 3 sitcom.
You can hear this line at 00:18:46.234 in the Blu-ray version of the TV Series.
Quote context
[...]
- We are not going to be great. We are not going to be amazing. We are going to be amazingly amazing!
- Life. Loathe it or ignore it, you can't like it.
- Are you sure you know what you're doing? We've been attacked once already, you know.
- Look, kid, I promise you, the live population of this planet is nil plus the five of us.
- Let's get on in there. Okay?
- Okay.
- Uh, hey, Earthman. Earthman.
- Arthur.
- Er, could you just, sort of, keep the robot with you, and guard this end of the passage way? Okay?
- Guard? What from? I thought you said there was no-one here.
[...]