I'm warning you, don't start up with my son.

2 seconds sound clip from the All Through the Night (1942) movie soundboard.

You can hear this line at 00:17:49.737 in the Blu-ray version of the movie.

Quote context

[...]

- Don't worry, miss, things ain't always as black as they looks.

- I can stay here if I want to, and I want to stay here!

- You're getting all my customers conscience-stricken, and you're busting up my show.

- Take it easy, Marty, this glamour girl you're pushing around happens to be my mother.

- Ain't I got enough trouble with you? Do I have to have your mother?

- I'm warning you, don't start up with my son.

- I'm telling you and your son both I don't know any guy named Miller.

- I don't know nothin' about any murder, and stop upsettin' my Prima Donna.

- Now be sweet, will you? Will you scram?

- All right, Marty, all right.

[...]