Scooby Dooby Doo!
1 seconds sound clip from Scooby-Doo, Where Are You! - The Backstage Rag (S1E9).
You can hear this line at 00:21:01.577 in the Blu-ray version of the episode.
Quote context
[...]
- This town's been flooded with phony twenties for weeks.
- Aw, it was nothing really. But old Mr. Pietro posing as the doorman sure had us fooled for a while.
- He really gave himself away when he put on his little puppet show for us.
- The real hero is Scooby Doo. By the way, where is he?
- Like I said before, what a ham.
- Oh, boy!
- Hello.
- Help! Help! Stop! Stop! Come back here! Help! My princess has been dognapped!
- Grr!
- That sounds like Scooby-Doo!
[...]