Dexter, in case you don't know it...
4 seconds sound clip from the The Philadelphia Story movie soundboard.
You can hear this line at 00:43:56 in the Blu-ray version of the movie.
Quote context
[...]
- As a matter of fact, it even changed her shape. She was a dumpy little thing at one time.
- Only as it happens, I'm not interested in myself for the moment.
- Dexter, in case you don't know it...
- She's a girl who's generous to a fault.
- Except to other people's faults.
- For instance, she never had any understanding of my deep and gorgeous thirst.
- Granted. But you took on that problem with me when you took me.
- You were no helpmate there. You were a scold.
- It was disgusting. It made you so unattractive.
[...]