Well, sit down, sit down. You can't write standing up. Sit down.
5 seconds sound clip from the Ruggles of Red Gap (1935) movie soundboard.
You can hear this line at 00:17:51 in the Blu-ray version of the movie.
Quote context
[...]
- Yes, sir, but I fail to see how you are to acquire culture in this way, sir.
- Well, I don't know. I been getting away with it ever since I come to Paris.
- Now, look, you write it this time and that'll make it stronger with Effie, see?
- Here is displayed in its full flower, sir.
- Well, sit down, sit down. You can't write standing up. Sit down.
- I may be a little mad at Effie, but I ain't mad at you. Now, go on, sit down.
- Well, you ain't ashamed to sit here, are you?
[...]