But whenever I hear of a situation like this I am reminded of a scene from War Games when one of the scientists (played by Dabney Coleman) insults the General in charge of NORAD (played by Barry Corbin) by calling him a "Pig eyed sack of sh*t."
The General responds, "Oh, I was hoping for something a little better than that from you, sir. A man of your education."
I was expecting something classier from Professor Xavier, but I guess a**hole will have to do.
You don’t want to get too creative with that type, they might not be smart enough to know you insulted them.