- Care for some Brie and crackers?
- No, no, thanks. Watching my waistline.

6 seconds sound clip from Darkwing Duck - Toys Czar Us (S1E32).

You can hear this line at 00:02:37.182 in the DVD version of the TV Series.

Quote context

[...]

- Hey, DW, they want you at Gos's school for a parent-teacher conference.

- This is the third time Gosalyn's been caught playing baseball in the halls, Mr. Mallard.

- Do you know what that means?

- Please have mercy on her! She's just a child. I've been derelict in my duties. Punish me. Not her, not her!

- Mr. Mallard, please, this really isn't necessary.

- Care for some Brie and crackers?

- No, no, thanks. Watching my waistline.

- Gosalyn really is a good kid.

- Oh, and I know it's difficult being a single parent.

- Yes, yes, quite right. Most difficult.

- I think you might find some helpful hints in this book, The Perfect Parent.

- Congratulations, reader. You're on your way to becoming the perfect parent.

[...]