Let me tell you about something. Political correctness. The way political correctness works in jokes is like this.
You can't make offensive sterotype jokes unless you're part of that group. If you're not, you can't. A black guy can sit there and make jokes about being black all he wants and it's not offensive. Disabled people can joke about their disability. Blondes can't make dumb blonde jokes. Asian can make yellow slant eyed good with electronics jokes. Jewish people can make greedy Jew jokes, and all that stuff is good, as long as their the one that's doing them.
That's one of the benefits of the Race Card (tm)