Well, don't tell him!
4 seconds sound clip from the Fun and Fancy Free movie soundboard.
You can hear this line at 01:01:30 in the Blu-ray version of the movie.
Quote context
[...]
- Wait a minute now. He may be smarter than he looks.
- Oh, I hope he doesn't find them.
- Hey, giant, you're getting warm.
- Charlie!
[...]