Oh, I don't know.

4 seconds sound clip from the White Christmas (1954) movie soundboard.

You can hear this line at 01:22:03 in the Blu-ray version of the movie.

Quote context

[...]

- That's funny. Are you sure?

- Oh, I should've known. She'll never get involved with anyone until I'm married or engaged or something.

- Well, I guess that's the end of that.

- Unless I get myself engaged or something real fast.

- That's ridiculous. Even if it made any sense at all, you're up here in the wilderness. There's nobody around here.

- Oh, I don't know.

- Be realistic. Who could you find up here to get yourself engaged to?

- Well, I suppose it ought to be someone that I know.

- That always helps.

- Of course, it's got to be a man.

- That's an absolute must.

- No, no, no. I mean a mature man. You know, one with talent and experience. One that's witty, gay, charming, attractive.

[...]