It was a dark and stormy night when suddenly the case took a left turn and headed straight for... Dementedville.
8 seconds sound clip from Darkwing Duck - Beauty and the Beet (S1E3).
You can hear this line at 00:05:21.087 in the DVD version of the TV Series.
Quote context
[...]
- Dr. Bushroot, wait! Where are you going?
- Oh, yes, there were six pairs of socks, some polka-dotted underwear and... Wait a minute.
- Sorry, DW, that's my laundry list.
- This may be the only chance I have left.
- Once I prove that my theories work, the dean will have to fund my project again.
- Are you ready? Then here's to a better tomorrow!
- Oh, dear, I feel so... so... so normal.
[...]