You don't scare me. I've seen better teeth on a rusty zipper.
— Gosalyn Mallard (Christine Cavanaugh)
6 seconds sound clip from Darkwing Duck - Toys Czar Us (S1E32).
You can hear this line at 00:12:56.852 in the DVD version of the TV Series.
Quote context
[...]
- Did I mention the toys? All the toys you could possibly want?
- I'm too old for baby toys, bugle beak. What's in it for me?
- My newest line: Destructo-toys.
- All right, Quack, you asked for it!
- You don't scare me. I've seen better teeth on a rusty zipper.
- Technical difficulties, I'm sure. Nothing to worry about. One moment, please.
- I know they went to that pizza joint.
[...]