They're finding out now that no Christmas is coming.
6 seconds sound clip from the How the Grinch Stole Christmas! (1966) movie soundboard.
You can hear this line at 00:19:57 in the Blu-ray version of the movie.
Quote context
[...]
- The 3 words that best describe you, are as follows, and I quote: 'Stink, stank, stunk'.
- It was a quarter of dawn, all the Whos still abed, all the Whos still a-snooze.
- Ten thousand feet up, up the side of Mount Crumpit, he rode with his load to the tiptop to dump it.
- 'Pooh-pooh to the Whos', he was Grinch-ily humming.
- They're finding out now that no Christmas is coming.
- They're just waking up. I know just what they'll do. Their mouths will hang open a minute or two.
- Then the Whos down in Who-ville will all cry boohoo.
- 'That's a noise', grinned the Grinch, 'that I simply must hear'.
- Fah who for-aze, dah who dor-aze, welcome Christmas, come this way. (2)
[...]