That's a deal, Professor.
1 seconds sound clip from Scooby-Doo, Where Are You! - Scooby Doo and a Mummy, Too (S1E12).
You can hear this line at 00:02:56.301 in the Blu-ray version of the episode.
Quote context
[...]
- It'll take more than a silly superstitious curse to scare us off.
- Hey, Professor, what kind of a crazy coin is this?
- It's part of an ancient mystery I haven't been able to solve yet.
- Well, could you solve how I can get a sandwich? I'm starving!
- Me, too!
- Why don't you kids run downtown and bring back some sandwiches? I'll buy.
- My word! What could have done that?
- No! The mummy of Anka is gone!
[...]