Oh, I hope he doesn't find them.
5 seconds sound clip from the Fun and Fancy Free movie soundboard.
You can hear this line at 01:01:25 in the Blu-ray version of the movie.
Quote context
[...]
- Fi, fo, fe, foy fe, fe, fe, fe... Fifi? I don't know no Fifi.
- Those are his magic words, you know.
- 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!
[...]