In the book, Melanie takes in an old scruffy homeless man who becomes a sort-of bodyguard, and is absolutely devoted to Melanie despite his rather gruff misanthropic and misogynist manner:
India to Melanie: "I think he’d really like for somebody to insult you, so he could kill them to show his respect for you."
Scarlett getting mad at Rhett during the escape from Atlanta when he tells her they will be parting ways. She starts hurling insults at him and he just laughs and gives this awesome reply:
Rhett: Never mind the rest, I follow your general idea.
Grandpa Merriwether suffering the meetings of the ladies' associations in his house, especially when the ladies argue over whether to care for local graves of Yankee soldiers:
Grandpa Merriwether, who had been banished to the kitchen, reported afterwards that the noise sounded just like the opening guns of the battle of Franklin. And, he added, be guessed it was a dinged sight safer to be present at the battle of Franklin than at the ladies’ meeting.
Scarlett's impulsive response when Rhett propositions her to become his mistress. She gets pissed off not because he insulted her honor, but because he insulted her with a deal she would nothing out of (besides maybe a bunch of brats).