Hi Tishie,
the first thing you should do is not take it personal or get angry. He probably hears this all the time at school so find out where he's getting this. It's amazing the kind of things they hear at school. Then you should make it clear that this is an unacceptable way to talk to you and if he is upset he needs speak about his feeling in a more respectful fashion. If it happens again then he needs to know there will be consequences if he does so. Good luck. By the way I have 2 girls ages & & 11.