I underestimated you once, Darkwing Duck.
4 seconds sound clip from Darkwing Duck - Darkly Dawns the Duck: Part 2 (S01E01).
You can hear this line at 00:20:26.359 in the DVD version of the TV Series.
Quote context
[...]
- All right! Payback time, Launchpad.
- It's over, Taurus Bulba, and this time you'll be in a non-portable prison.
- Mm. Mom was right. I should have been a dental hygienist.
- I think this is where the hero makes his dramatic exit.
- I underestimated you once, Darkwing Duck.
- Gosalyn, dear, I know you've been through a lot, but your life isn't over.
- Now, can't you show a prospective parent a little more spirit?
[...]