- That will do, Tracy.
- Oh, I give up.

5 seconds sound clip from the The Philadelphia Story movie soundboard.

You can hear this line at 00:04:18 in the Blu-ray version of the movie.

Quote context

[...]

- Mother, if I never see Mr. C.K. Dexter Haven again, I'll be...

- Isn't that awful.

- They're friends of your father's.

- Wouldn't you know it. What are they? Tap dancers or just musical comedy producers?

- Well, that's hardly fair to your father's interest in the arts.

- Art, my eye. The art of putting up $100000 to display the shapely legs of...

- That will do, Tracy.

- Oh, I give up.

- If you'd just face the facts squarely, as I did.

- We both might face the fact that neither of us has proved to be a very great success as a wife.

- We just picked the wrong first husbands, that's all.

- Well, don't let's argue about it. You wanted me to take a stand and I've taken it.

[...]