Hey, come out from under that sheet!
2 seconds sound clip from Scooby-Doo, Where Are You! - A Gaggle of Galloping Ghosts (S1E11).
You can hear this line at 00:17:04.424 in the Blu-ray version of the episode.
Quote context
[...]
- Shaggy, what do you mean, riding that cart around for the fun of it?
- Well, since you got yourself lost, it seemed like a good idea.
- This clue of Daphne's is the only one we have.
- So we'll go down to the Franken family crypt.
- A crypt is a tomb where you bury people.
- A tomb?
- Hey, come out from under that sheet!
- OK, Scooby, we'll leave you, but I'd hate to be here alone if those 3 creeps show up.
- We've searched the whole place, and no sign of a clue.
- The date carved on this one is the same as the clue... 1668.
- Shaggy, this stone lid rolls back. Give me a hand.
[...]