If you’re arguing that there are persons that don’t fit neatly into the physical category of “man” or “woman,” we agree. Of course there are.
If you’re arguing against the idea of categorizing persons based on physical criteria at all, you may be doing this because you don’t think it’s moral or you don’t think it’s useful, or both. It would help in our discussion if you simply pointed out which it was so we can discuss it. Otherwise, I fear that you’re simply asking me to define a “table,” only so you can say “ha, but I’ve seen tables that don’t fit neatly into your definition!”
As far as a definition for a male human, I suppose I’d start here: http://en.wikipedia.org/wiki/Man.
