- I never saw you so serious.
- Well...

8 seconds sound clip from the The Skin Game (1931) movie soundboard.

You can hear this line at 00:20:17 in the Blu-ray version of the movie.

Quote context

[...]

- Mother's fearfully bitter when she gets her knife in.

- If old Hornblower' s disgusting, there's no reason why we should be.

- So you think I'm capable? That's nice, Jill.

- No, no, darling.

- But I want to warn you solemnly that mother would tell you you're fighting fair no matter what she and Dawker do.

- I never saw you so serious.

- Well...

- Hey!

- Sorry. I was just beginning to enjoy myself, now everything's going to be bitter and beastly with mother in that mood.

- That horrible old man.

- Oh, daddy, I... don't let them make you horrid. You're such a darling.

[...]