You're right. Something is missing. But what? I've got the beard, the coat, the boots, the belt...

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

You can hear this line at 00:46:02 in the Blu-ray version of the movie.

Quote context

[...]

- But you're the Pumpkin King.

- Not anymore!

- I feel so much better now!

- Jack, I know you think something's missing, but...

- Ow!

- Sorry.

- You're right. Something is missing. But what? I've got the beard, the coat, the boots, the belt...

- Jack! This time we bagged him!

- This time we really did!

- He sure is big, Jack.

- And heavy!

- Let me out!

- Sandy Claws. In person. What a pleasure to meet you!

[...]