Oh, ahem, uh, it was just one of the reindeer getting himself some exercise, dear.
6 seconds sound clip from the The Year Without a Santa Claus movie soundboard.
You can hear this line at 00:10:03.195 in the Blu-ray version of the movie.
Quote context
[...]
- Bon voyage. Send us a card now and then.
- I wasn't sure I was doing the right thing.
- But faced with the idea of having no Christmas at all, drastic measures were called for.
- Well, what's all that racket out there, Ma?
- Oh, ahem, uh, it was just one of the reindeer getting himself some exercise, dear.
- They'll get used to it. Heh. I have already. I tell you, this is the life.
- Are you thinking that I'm doing the wrong thing by staying home?
[...]