- Did he come yet? I've been waiting such a long time, and I haven't seen a thing. Did who come?
- Santa Claus.
- Now, you know he's not going to come until you're asleep.

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

You can hear this line at 01:38:15.932 in the DVD version of the movie.

Quote context

[...]

- Now, we're not gonna let them talk us out of it. After all, we are of age. Practically.

- John, even if I did go to New York we could still work something out somehow. Couldn't we?

- Do you think so?

- Merry Christmas, John.

- Merry Christmas, Esther.

- Tootie, you bad girl. You should be asleep.

- Did he come yet? I've been waiting such a long time, and I haven't seen a thing. Did who come?

- Santa Claus.

- Now, you know he's not going to come until you're asleep.

- How will he know how to find us next year? He's so used to coming here.

- Oh, you can't fool him. He can find anybody he wants to find.

- If Santa Claus brings me any toys, I'm taking them with me.

- I'm taking all my dolls. The dead ones too. I'm taking everything.

- Of course you are. I'll help you pack them myself.

[...]