- We're eating early, you know.
- All right, Mother. Guess why we're eating early.

4 seconds sound clip from the Meet Me in St. Louis (1944) movie soundboard.

You can hear this line at 00:08:06.611 in the DVD version of the movie.

Quote context

[...]

- After all, he's only lived here three weeks. You can't expect him to fling himself at you.

- Well, that's true.

- Besides, meeting him across the lawn for the first time would be so ordinary.

- I don't want to be just introduced to him. I want it to be something strange and wonderful, something I'll always remember.

- I'll get George Briggs to bring him to Lon's going-away party on Saturday.

- Could you?

- Rose. Esther. The water's hot. If you're going to wash your hair, you'd better do it now.

- We're eating early, you know.

- All right, Mother. Guess why we're eating early.

- Well, you certainly don't want the whole family sitting in there drinking in every word while a man proposes to you long-distance.

- Proposes? I don't see why you assume Warren is going to propose to me.

- Well, why else do you think he's calling you long-distance? Do you know what it costs?

- I'm not even sure I'll be in.

- My dear, when you get to be my age you'll find out there are more important things in life than boys.

[...]