When you said old, you just weren't, like, kidding.
3 seconds sound clip from Scooby-Doo, Where Are You! - Mine Your Own Business (S1E4).
You can hear this line at 00:05:34.983 in the Blu-ray version of the episode.
Quote context
[...]
- Well, it's still early. Why don't we go into the ghost town and take a look around?
- Wonder what it's like on a Saturday night.
- 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.
- Two.
- Ghosts?
- It's not a ghost. It's a player piano.
- It's automatic. It must have turned itself on automatically.
[...]