I mean your real name.

4 seconds sound clip from the Miracle on 34th Street (1947) movie soundboard.

You can hear this line at 00:24:38 in the Blu-ray version of the movie.

Quote context

[...]

- Would you please tell her that you're not really Santa Claus, that there actually is no such person?

- I'm sorry to disagree with you. Not only is there such a person, but here I am to prove it.

- No, no, no. You misunderstand. I want you to tell her the truth.

- Uh, what's your name?

- Kris Kringle.

- I'll bet you're in the first grade. Second.

- I mean your real name.

- That is my real name.

- Second grade.

- It's a progressive school.

- Oh. It's a progressive school.

- May I have this gentleman's employment card, please?

[...]