I've made the advice several times. When one encounters someone that obviously likes to argue for the sake of argument. That keeps on making even more outrageous answers in response to reasoned statements. You must , and again, you MUST, accept their creepy,cross-wired condition, and TELL them you recognize them for what they are, and refuse to pay ANY more attention to them. Inform them, preferably right in the public eye, you recognize their condition, and ignore any more reference to, from, or about them. They are a waste of time, when we don't have much time le . . . .