Three blind mice, three blind mice.
2 seconds sound clip from Darkwing Duck - Duck Blind (S1E8).
You can hear this line at 00:12:53.923 in the DVD version of the TV Series.
Quote context
[...]
- My remote mass analyzer tells me Launchpad's height, weight and personal horoscope.
- Well, I still don't... Yeow! What's with my Squawkman?
- Rise and shine, St. Canard. This is your wake-up call.
- And hello to you, Darkwing Dork.
- Three blind mice, three blind mice.
- Now, for those of you who like clues...
- If you wanna defeat me, meet me at First Light.
[...]