That's it. Timmy's medicine.
3 seconds sound clip from the The Secret of NIMH (1982) movie soundboard.
You can hear this line at 00:12:45.085 in the Blu-ray version of the movie.
Quote context
[...]
- Did you see that cat out there all dripping and wet with water?
- I'll go back to Mr. Ages tomorrow...
- You weren't so bad yourself. Hey, we make a pretty good team.
- Oh, here. You dropped this back there.
- Nobody messes with old Jeremy boy. Nobody!
- That's it. Timmy's medicine.
- Oh, thank you! Thank you so much!
- Uh-huh. It is... What? It is? I mean, it is.
- Well, I saw it lying there, and I said...
[...]