You can go find out what Christmas is, if it is.
4 seconds sound clip from the The Bear Who Slept Through Christmas movie soundboard.
You can hear this line at 00:06:21.566 in the VHS version of the movie.
Quote context
[...]
- Okay, okay, go ahead. Stay awake all winter.
- This could only happen to a Pisces.
- Heh heh. And he's got a long, white beard. Ha ha! Huh, Ted?
- Well, if it is true, I sure wouldn't want some fat red human crawlin' down my chimney!
- Look, man, why don't you stay awake? We'll sleep.
- You can go find out what Christmas is, if it is.
- Ted! Stop it! Watch what you're doing!
- That stuff's running all over the floor! Oh, no!
[...]