You ought to behave yourself! Acting like poor white-trash children!
5 seconds sound clip from the Gone with the Wind (1939) movie soundboard.
You can hear this line at 00:24:48 in the Blu-ray version of the movie.
Quote context
[...]
- You'll be lucky if you don't lose ol' whisker-face Kennedy.
- You've been sweet on Ashley for months and his engagement's going to be announced tonight.
- You ought to behave yourself! Acting like poor white-trash children!
- If you's old enough to go to parties, you's old enough to act like ladies!
- We've borne enough insults from the meddling Yankees.
- It's time we made them understand we keep our slaves with or without their approval.
- 'Twas the sovereign right in the state of Georgia to secede from the Union.
[...]