Go with Auntie Shrew.
1 seconds sound clip from the The Secret of NIMH (1982) movie soundboard.
You can hear this line at 00:22:46.114 in the Blu-ray version of the movie.
Quote context
[...]
- Please, take the children out of here.
- Mommy, we can't leave Timmy.
- I've got to try and stop that thing.
- Wait! You're out of your mind?
[...]