Sorry. Hee hee hee!
3 seconds sound clip from Scooby-Doo, Where Are You! - A Gaggle of Galloping Ghosts (S1E11).
You can hear this line at 00:14:36.237 in the Blu-ray version of the episode.
Quote context
[...]
- Look in that corner. Old squarehead's taking a nap on the table. Let's get him.
- You jerk the sheet off, and I'll blast him with this, and he'll be one soggy ghost.
- Yes.
- Sorry about the free bath, Scoob.
- Give me a shot of that purple stuff, Igor.
- Yuck!
- Me, too.
[...]