All right, Marvin, turn her off. I'm convinced.
6 seconds sound clip from the The Sword in the Stone (1963) movie soundboard.
You can hear this line at 00:19:22.760 in the Blu-ray version of the movie.
Quote context
[...]
- All right. I shall demonstrate.
- Higitus, figitus, migitus, mo, wind and snow swirl and blow.
- What the devil are you up to?
- That is what I call a wizard blizzard.
- Hey, Kay, would you look at this? An indoor blizzard. And in the month of July.
- So what?
- All right, Marvin, turn her off. I'm convinced.
- I hope you don't go in for any of that black magic.
- Oh, no, no, no, no. Never touch the stuff.
- My magic is used mainly for educational purposes.
- In fact, that is why I am here. I have come to educate the Wart.
- Oh, no, you don't. I'm running this place.
[...]