- What did you come here for, then?
- I don't know. You tell me. You're supposed to be the one that has all the answers. You tell me.

7 seconds sound clip from the It's a Wonderful Life (1946) movie soundboard.

You can hear this line at 00:46:25 in the Blu-ray version of the movie.

Quote context

[...]

- What do you want?

- Me? Not a thing. I just came in to get warm.

- He's making violent love to me, Mother.

- You tell him to go right back home, and don't you leave the house, either!

- Sam Wainwright promised to call you from New York tonight.

- What's your mother mean? You know, I didn't come here to...

- What did you come here for, then?

- I don't know. You tell me. You're supposed to be the one that has all the answers. You tell me.

- Why don't you go home?

- That's where I'm going. I don't know why I came here in the first place.

- Good night. Good night!

- Mary! Mary! The telephone. It's Sam. I'll get it.

- Whatever were you doing that you couldn't hear?

[...]