- What's that?
- Don't worry, they haven't started yet.
- Good.

4 seconds sound clip from The Hitchhiker's Guide to the Galaxy (1981) - Episode 1 sitcom.

You can hear this line at 00:13:23.000 in the Blu-ray version of the TV Series.

Quote context

[...]

- Several huge, yellow, slab-like somethings, huge as office blocks, silent as birds.

- They hung in the air exactly the same way that bricks don't.

- The planet was almost totally oblivious of their presence.

- They went unnoticed at Goonhilly, they passed over Cape Canaveral without a blip, and Woomera and jodrell Bank looked straight through them. Which was a pity, because it was exactly the sort of thing they'd been looking for all these years.

- Arthur Dent, too, had other things on his mind.

- What's that?

- Don't worry, they haven't started yet.

- Good.

- It's probably just your house being knocked down.

- What?

- Five minutes to go.

- Damn you and your fairy stories! They're smashing up my home!

- Stop, you vandals, you home-wreckers, you half-crazed Visigoths!

- Stop! Arthur, come back. It's pointless!

[...]