I think I know what it was.
4 seconds sound clip from the The NeverEnding Story (1984) movie soundboard.
You can hear this line at 00:16:05 in the Blu-ray version of the movie.
Quote context
[...]
- Where I come from in the North, we us to have exquisite gourmet rocks.
- Only now... now, they're all gone.
- Near my home, there used to be a beautiful lake, but then... then it was gone.
- No. It just wasn't there anymore. Nothing was there anymore. Not even a dried-up lake.
- A hole?
- A hole would be something. No, it was Nothing.
- And it got bigger and bigger.
[...]