"know-it-all" attitudes I have met quite many people who always act as if they didn't need to be told about this or that. They immediately speak up "I know that already you don't need to teach or lecture me" something like that. Is being told about something having the same meaning as being stupid ? Even though I know I should stop talking too much to those people, their attitudes and ways to answer or response like that really make me feel bad. I want to punch their faces. Could you tell me your experience in handling these things ?