"My remark?"
"Yes."
"What on earth was there in my remark to thank me for?"
"If there's one thing I hate more than another," burst out Mr. Dashwood, "it's sarcasm misapplied."
"Why do you misapply it, then?"
"I never do. I never use it, so I couldn't misapply it. It's you."
"What's you?"
"You who are sarcastic."
"I sarcastic!" said the girl with the air of a sacristan accused of theft. "When was I ever sarcastic?"