- No wonder this place is empty. You ask for a sarsaparilla, and all you get is a glass of spider webs.
- Spider webs?

8 seconds sound clip from Scooby-Doo, Where Are You! - Mine Your Own Business (S1E4).

You can hear this line at 00:05:50.331 in the Blu-ray version of the episode.

Quote context

[...]

- Boy, what a spooky old street.

- I've seen enough. Let's go back!

- Not until we walk around this ghost town and see what we can find.

- Like, I know what we'll find.

- What?

- Ghosts.

- Hey, look, Shaggy. A real old-time Western saloon.

- When you said old, you just weren't, like, kidding.

- Sarsaparilla, bartender.

- Two.

- No wonder this place is empty. You ask for a sarsaparilla, and all you get is a glass of spider webs.

- Spider webs?

- Zoinks! Ghosts!

- Ghosts?

- It's not a ghost. It's a player piano.

- So who's playing it?

- It's automatic. It must have turned itself on automatically.

- Now come down out of those draperies.

- Like, why couldn't you have been a poodle?

[...]