- Merry Christmas, Mr. Trundle.
- Not very merry, I'm afraid.

5 seconds sound clip from the 'Twas the Night Before Christmas (1974) movie soundboard.

You can hear this line at 00:17:30.975 in the Blu-ray version of the movie.

Quote context

[...]

- That's it. I'll fix it, Father. I'll fix the clock by midnight. Then maybe Santa will...

- You believe in Santa?

- I don't know. I don't know. But I've learned that I still got a lot to learn.

- But, son, you don't know how to fix a clock.

- That's all right, Father. Copernicus knew.

- You hope, and I'll hurry. You pray, and I'll plan. We'll do what's necessary, 'cause even a miracle needs a hand.

- Good luck!

- Father Mouse?

- Merry Christmas, Mr. Trundle.

- Not very merry, I'm afraid.

- You're right, of course. And it's my fault, my family's.

- How so?

- My older boy, Albert. First, he insulted Santa, and then...

- I can hardly say it.

- Go on.

- I'm afraid he got into your clock to see how it worked, and then...

- Kerplunk.

- Kerplooey.

- So that was it.

[...]