What do my penis and my wife have in common? I beat them
That joke sounds inappropriate to me. Are you intending to say that you abuse your wife?
Yes and I think it is hard for her to just get over it.
Physical abuse is wrong and joking about it is inappropriate and hurtful. I have seen videos of domestic abuse on YouTube and the long-term hurt and effects that it has. It would be beneficial for you to watch some of these videos.