During the conversation... 1. So what? 2. Who cares? 3. It doesn't matter to me. 4. I don't care. 5. What do you want me to do? 6. This affects me how? http://endic.naver.com/krenIdiom.nhn?sLn=kr&idiomId=1028d480d34944f6a3f10d71b2c8e407&query=%EC%96%B4%EC%A9%8C%EB%9D%BC%EB%8A%94%EA%B1%B0%EC%95%BC