That's a magic shadow. It belongs to Jack Frost, not me.
8 seconds sound clip from the Jack Frost (1979) movie soundboard.
You can hear this line at 00:02:23 in the Blu-ray version of the movie.
Quote context
[...]
- But how could Pete have cast a shadow? It's impossible. There's no sun today.
- Chestnuts roasting on an open fire, Jack Frost nipping at your nose.
- Heh heh heh. They'll never catch on up there.
- That's a magic shadow. It belongs to Jack Frost, not me.
- Then he gets 6 more weeks of winter fun, and I get a bit more shut-eye.
- Well, of course, you never saw him. He's invisible. Except for his shadow.
- Nobody's ever seen Jack Frost. Unless you count that one time when he became human.
[...]