- Tracy, your attitude is a little difficult to understand.
- Yes, I can see that it would be.
- Not necessarily.

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

You can hear this line at 01:42:51 in the Blu-ray version of the movie.

Quote context

[...]

- You'd better just say 'Good riddance,' George.

- It isn't easy, you know.

- I don't see why.

- Say something, stupid.

- Just wait a minute.

- What for?

- On the very eve of your wedding, an affair with another man.

- I told you I agree, George, and I tell you again, good riddance to me.

- Tracy, your attitude is a little difficult to understand.

- Yes, I can see that it would be.

- Not necessarily.

- You keep out of this.

- You forget, I am out of it.

- It may interest you to know that this so-called affair consisted of exactly two kisses and a rather late swim. All of which I thoroughly enjoyed, and the memory of which I wouldn't part with for anything.

- It's no use, Mike.

- After which I deposited Tracy on her bed in her room, and promptly returned down here to you two, which doubtless you'll remember.

[...]