I wouldn't make a big deal of it to begin with. It was a joke, humor comes in many forms including sarcastic. This is where the thick skin comes in, society today is so...weak I say...that the slightest off-hand remark gets a group of people in an uproar. Nobody wants to speak their mind because they might say something that will offend someone, somewhere. It's called jumping the gun to immediately mark his joke off as intolerance. That's the kind of knee-jerk reaction that brings about the cancer of political correctness.