Why is it considered inappropriate to take pictures of nude women at work?

This question is from my boss who works for a big box store, and I really don’t understand the difference between taking pictures of a naked woman and taking pictures of yourself. If you’re taking pictures of yourself, you’re already taking pictures of yourself. The only time we see people taking pictures of naked women is when they are taking a photo of themselves or taking a photo of their private parts, or if they are in public.