The old fool won't know what's hit him.
2 seconds sound clip from the Against the Drunken Cat Paws movie soundboard.
You can hear this line at 00:44:35.014 in the Blu-ray version of the movie.
Quote context
[...]
- Inspector, it's a lovely zither. Would you like me to play a tune?
- Alright.
- Hey, he doesn't know a thing about music.
- Go on, go on. Or your bride will marry someone else.
- You really are an excellent official. Always concerned for the public.
- Of course, it's our duty to help the public.
- The old fool won't know what's hit him.
- The Two Giants want to ask you, if you want them to help, too, they are ready on one condition.
[...]