I do declare, Frank Kennedy!
4 seconds sound clip from the Gone with the Wind (1939) movie soundboard.
You can hear this line at 00:20:47 in the Blu-ray version of the movie.
Quote context
[...]
- I want to eat barbecue with you.
- And mind you don't go philandering with any other girl, because I'm mighty jealous.
- I won't, Miss O'Hara. I couldn't!
- I do declare, Frank Kennedy!
- You don't look dashing with that new set of new whiskers?
- Oh thank you, thank you, Miss Scarlett.
- You needn't be so amused. Look at her. She's after your beau now.
- That's mighty flattering of you, Miss Scarlett.
[...]