If only we could set a trap for that ghoulish ghost.
3 seconds sound clip from Scooby-Doo, Where Are You! - A Gaggle of Galloping Ghosts (S1E11).
You can hear this line at 00:17:52.388 in the Blu-ray version of the episode.
Quote context
[...]
- The date carved on this one is the same as the clue... 1668.
- Shaggy, this stone lid rolls back. Give me a hand.
- If only we could set a trap for that ghoulish ghost.
- What are you doing? Use the tapestry for a trap? Great idea.
[...]