True, if we're talking abou a lady (if she deserves the title, she should not be struck)
many women however are far far from that, I would never advocate striking other human beings (men or women) but if it were needed, its go time.
if a woman or man attacks you, you have every right in the world to open up as many cans of whoopass as you can get a hold of to defend yourself.
So yes, Danny on some occasions, a guy does have the right to whip a girls ass..