Um... Nobody.
5 seconds sound clip from the Batman Returns (1992) movie soundboard.
You can hear this line at 00:27:02 in the Blu-ray version of the movie.
Quote context
[...]
- Um, this is all very interesting, though a bit on the technical side.
- Which is a very novel approach, I'd say.
- And who would you say this to?
- What did curiosity do to the cat?
- I'm no cat. I'm just an assistant. A secretary.
- Listen, it's our secret. Honest.
- How can you be so mean to someone so meaningless?
[...]