What's the difference between a computer and a woman? You can't punch a computer to help it learn.
Are you trying to say that you punch women?
It's the obvious joke. Women can't understand computers, they only deserve to be punched!
Making light of a women getting punched is not really something to joke about. There are many instances of domestic violence in our society today, so to make jokes when it comes to something like this is not a great idea.