Here, everything is the opposite of your universe. And Negaduck rules supreme.
5 seconds sound clip from Darkwing Duck - Life, the Negaverse and Everything (S1E35).
You can hear this line at 00:09:53.535 in the DVD version of the TV Series.
Quote context
[...]
- Tank? OK, Gosalyn's sweet, Launchpad's insane and Tank's polite?
- What's going on around here?
- By your confusion, I deduce you're Darkwing Duck.
- I'll make this simple. This is your world. This is our world.
- Here, everything is the opposite of your universe. And Negaduck rules supreme.
- Oh, I get it. I fell into a big birthday cake, and now I'm in another universe.
- Tankard H. Muddlefoot, where are you?
- It's Mother and Father! Hide!
- Ooh, Tank, dear, you're missing Honker's birthday party.
[...]