I think you meddlers must be taught a lesson in witchcraft.
4 seconds sound clip from Scooby-Doo, Where Are You! - Which Witch Is Which (S1E13).
You can hear this line at 00:09:13.078 in the Blu-ray version of the episode.
Quote context
[...]
- Like, look. Here's some more of those crazy voodoo dolls.
- She's trying to scare us off.
- Well, it won't work. That voodoo stuff is just a bunch of phony baloney.
- Hold it, Shaggy. All you did was back into this fork.
- So you dared enter the swamp, in spite of my warning signs.
- You shouldn't believe everything you read.
- I think you meddlers must be taught a lesson in witchcraft.
- Smoke of evil, make her vanish!
- Daphne!
- Poor Daphne. Gone forever in a puff of smoke.
- Yeah. All that's left are her footprints on that rug.
- That can only mean one thing.
- No, silly. She slid down through a trap door in the floor.
[...]