Boy, I'd like to try that.
2 seconds sound clip from the It's Magic, Charlie Brown movie soundboard.
You can hear this line at 00:09:26.752 in the VHS version of the movie.
Quote context
[...]
- Quiet. Quiet, while the Great Houndini readies himself.
- I wonder what this trick is going to be.
- We would like another volunteer for the great levitation trick.
- Wow.
- Before your very eyes, the Great Houndini will raise a person into the air.
- Great. We have a volunteer. Please come up, madam. Just lie here on that table.
- Does he know what he's doing?
- He must have absolute quiet. The Great Houndini demands absolute quiet.
- I hope he knows what he's doing.
- And now, for the best trick of all.
[...]