- Would you do it for a Scooby Snack? How about two?
- Three?
- Okay, three.

8 seconds sound clip from Scooby-Doo, Where Are You! - Hassle in the Castle (S1E3).

You can hear this line at 00:11:10.570 in the Blu-ray version of the episode.

Quote context

[...]

- Look, in the second passage, the word catacombs is underlined in red.

- And if my knowledge of history is correct, we should find catacombs in the basement.

- This is the place.

- Okay, Scooby. Go in and take a look around. We'll keep watch out here. No, I'm not kidding.

- There he goes again with his fake-wounded routine.

- What a ham.

- Would you do it for a Scooby Snack? How about two?

- Three?

- Okay, three.

- Scooby-Doo!

- Scooby says it's okay.

- Man, look at all that crazy magic stuff. A saw-them-in-two box, disappearing cabinets, levitating tables. Gosh!

- But what's all this magic stuff doing here?

[...]