People joke about the most f-up things, it is human nature to do so. Often crying and laughing goes hand in hand...
What I will never believe to be right is "gauging" people from saying what they want, or in any way limit others free speech!
And some people really go out of their way to be offended by anything and everything, I find that unbearable! - But then again, I can take a joke, even a bad one!