It seems you didn't think anything too well of yourself.
4 seconds sound clip from the The Philadelphia Story movie soundboard.
You can hear this line at 01:44:57 in the Blu-ray version of the movie.
Quote context
[...]
- Will you promise me never to touch the stuff again?
- There are certain things about that other girl, that Miss Pommery '26, I rather like.
- But a man expects his wife to...
- To behave herself. Naturally.
- To behave herself naturally. Sorry.
- But if it hadn't been for that drink last night, all this might not have happened.
- Apparently nothing did. What made you think it had?
- Well, it didn't take much imagination.
- Not much, perhaps, but just of a certain kind.
- It seems you didn't think anything too well of yourself.
- That's the odd thing, George. Somehow I'd have hoped that you'd think better of me than I did.
- I'm not going to quibble. All the evidence was there.
- And I was guilty straight off. That is, until I was proved innocent.
- Yeah, downright un-American, if you ask me.
- You forgot your hat, Miss Tracy. And you look lovely, Miss Tracy. All our very best wishes.
- Dexter, I do wish you'd let me know when you invite people to Tracy's weddings.
- Why? What happened, darling?
[...]