Hmm... Their construction should be exceedingly simple, I think.

8 seconds sound clip from the The Nightmare Before Christmas (1993) movie soundboard.

You can hear this line at 00:34:15 in the Blu-ray version of the movie.

Quote context

[...]

- Dr Finkelstein to the front of the line!

- What kind of noise is that for a baby to make?

- Perhaps it can be improved?

- No problem!

- I knew it!

- Doctor, thank you for coming.

- We need some of these.

- Hmm... Their construction should be exceedingly simple, I think.

- How horrible our Christmas will be.

- No. How jolly!

- Oh, how jolly our Christmas will be.

- What are you doing here?

[...]