- You knew it was tomorrow night.
- Sure I did.

4 seconds sound clip from the You Can't Take It with You (1939) classic radio play.

You can hear this line at 00:35:18 in the radio play.

Quote context

[...]

- Well, then, Dad's been holding out on you. He used to be a champ. He told me so himself.

- Here's the grub. Only they didn't have any more frankfurters so I got pickled pigs' feet.

- Ohhhhhhh!

- Never mind, Ed. Just bring everything in the kitchen. I'll fix some scrambled eggs for Mr. Kirby.

- Oh, Alice, wait a minute! I'll help.

- Well, Tony... that's that, I guess. A fine impression we're making. How could you make such a dreadful mistake?

- You knew it was tomorrow night.

- Sure I did.

- Tony! You mean you brought them tonight purposely? Why?

- Well, I wanted their approval of you, just as you are... not a trumped up evening with everybody acting unnatural.

- Oh, but I wanted them to like us. Oh, you've spoiled it! I planned such a nice evening!

- Oh, a fine pair to plan things for. They're out there acting like a couple of people on a slumming tour!

[...]