Although this isn't my current situation, I have actually thought about what I will say to my son when I have another child in a few years. I just figure I will tell him that just like calves, kittens, puppies, etc. eat their mother's milk, so do baby humans. I certainly don't plan to cover myself in front of my family and didn't when I was trying to nurse my son.. I just didn't do it in front of my brother, because he is SO shy and embarrassed by things like that. He would leave the room, oh well.. he's still young.
By the way.. that's too cute what your 6 year old said. I love when kids say things that sound so grown up. LOL