You're making a mistake with the reindeer. Tsk, tsk, tsk.
7 seconds sound clip from the Miracle on 34th Street (1947) movie soundboard.
You can hear this line at 00:01:48 in the Blu-ray version of the movie.
Quote context
[...]
- You've got them mixed up. You're making a mistake.
- You're making a mistake with the reindeer. Tsk, tsk, tsk.
- Would you mind stepping out for a moment? Open the door.
- I'm sorry. The store isn't open today.
- I don't want to buy anything, and I'm sorry to interrupt you in your work.
- But I wanted to tell you you're making a rather serious mistake. With the reindeer, I mean.
- You've got Cupid where Blitzen should be. And Dasher Oh, Dasher should be on my right-hand side.
[...]