Now, I must have absolute quiet while I work.
4 seconds sound clip from Scooby-Doo, Where Are You! - Mine Your Own Business (S1E4).
You can hear this line at 00:10:06.416 in the Blu-ray version of the episode.
Quote context
[...]
- Maybe it's directions to a buried treasure.
- Yeah. Like a fortune in buried chocolate cheeseburgers.
- But those directions don't make sense.
- Then they must mean something.
- I've got it! I bet it's the combination of a safe.
- And there's an old safe in the lobby of this hotel.
- OK, Shaggy, you work on the combination as I read off the numbers.
- OK, but I need a moment to warm up.
- Now, I must have absolute quiet while I work.
- Look, I have the combination. Just turn the knob to the right.
- Well, why didn't you say so?
- Stop showing off, Scooby. I knew it was open all the time.
- Like, wow. Get a load of that.
- Well, let's see where it goes. All aboard.
- Come on, Scooby. You're not chicken.
- Bawk, bawk, bawk, bawk, bawk, bawk.
[...]