People who describe themselves as funny rarely are funny to others. And racist jokes are still racist. But we are just talking about dark humor here, and I will stand by my statement that you might not like that kind of joke, but it’s still a joke. And neither by making the joke or by laughing about the joke are you saying that you actually want whatever the joke is about to happen. Otherwise people like Anthony Jeselnik or Jimmy Carr would not have a career.