I don't take jokes about Satan (or religion) too seriously. Most of the time I laugh at them. Sometimes I think to myself, "Hey, I shouldn't be laughing. They're just making fun of my religion." But still, I can't help it. Otherwise, I don't think I would have been able to stay in this forum. On the other hand, of course, yes, there are other theists who may get fired up if you joke about Satan or something about their religion. So, the point is that not all theists are the same in every single aspect.
Edit: However, I think that most Christians and Muslims do get offended by jokes which have a religious connotation behind them (unfortunately).
Edit: However, I think that most Christians and Muslims do get offended by jokes which have a religious connotation behind them (unfortunately).