Thank you!
3 seconds sound clip from the Jingle All the Way (1996) movie soundboard.
You can hear this line at 00:54:40 in the Blu-ray version of the movie.
Quote context
[...]
- Just can't stay out of trouble, can you?
- You wouldn't want to hurt a fellow civil servant, would you?
- What's all this violence? It's Christmas I was just delivering some Christmas...
- All right, just stay there. And I'll know if you move, 'cause I have the ears of a snake!
- Oh, you shouldn't mess with that.
[...]