What's the best kind of girlfriend? An Arab, because she's always ready to blow.
Wow, I think that's really shocking to say! Do you have something against Arabic people? Is this why you don't want to see them?
Yes. Well, because they're all rapists and I can't live with that.
Arabic people are just like you and me and it's inappropriate and a hasty generalization to make that they are all violent and willing to commit terrorism. Doing so reinforces negative stereotypes against Arabic people and makes it more likely for them to encounter hate from other people. Instead of joking about Arabs and violence, why not find other things to joke about that do not result in the possibility of more hate occurring in the world?