My boss called me a name at work and I feel quite offended? Perspective please?

You do have the legal right ask, without repercussion if asked in private, that he not call you that anymore. I would suggest email because it allows you to think about what you say first and having it in writing will be important if If he does not stop. I would consult your HR rep if you have one. If you don't, there are plenty of lawyers that offer a free consultation with regards to this if it keeps going on. You have the right to a harment free workplace. Just don't make this a issue about gender though because then it could be blown way out of proportion.