- Keep the motor running, Johnny, please.
- Yeah. You stay here.

9 seconds sound clip from the It Came from Outer Space movie soundboard.

You can hear this line at 00:18:45.820 in the Blu-ray version of the movie.

Quote context

[...]

- I don't blame any of them. Can I prove it? Even to myself? Well, maybe if we really do find something...

- You really have to, Johnny?

- I have to, Ellen.

- You'd better keep out of it for a while, though. I wouldn't want them laughing at you.

- Look.

- What's that?

- What was that?

- I don't know.

- Did you hit it?

- I'll see.

- Keep the motor running, Johnny, please.

- Yeah. You stay here.

- Come on, let's get back.

- What is it?

- Thought I heard something.

(ELLEN SCREAMS)

- It's just a Joshua tree.

[...]