Those aren't ordinary pies. Those are expando-whammo pies.
8 seconds sound clip from Darkwing Duck - Just Us Justice Ducks Part1 (S1E20).
You can hear this line at 00:13:33.353 in the DVD version of the TV Series.
Quote context
[...]
- Friends, I give you NegaDuck.
- Well, since you put it that way... take this.
- Be careful with that. You'll put someone's eye out. See?
- Those aren't ordinary pies. Those are expando-whammo pies.
- This is the happiest moment of my life.
- Almost forgot. This is for Megavolt, Bushroot, Liquidator, Quakerjack, and NegaDuck makes five.
- Hey, Mr. Darkwing, I still have your change.
[...]