A present for the king!
2 seconds sound clip from Darkwing Duck - Quack of Ages (S1E51).
You can hear this line at 00:05:44.745 in the DVD version of the TV Series.
Quote context
[...]
- I am the mighty Darkwing Duck. And I pity the poor fool who stands in my way... Whoa, boy!
- Where brute force fails, try agility.
- If thou wouldst but listen...
- Where brute force and agility fail, try ingenuity.
- Brilliant. Now, all I have to do is wait for Launchpad to climb out and open the castle door.
- Doh!
- I tried to telleth you. They never locketh the back door.
[...]