visceris
A visceris is a person who is consistent his inconsistencies. He will very occasionally make claims attesting to some thing and at any given moment, refute everything that he had claimed with justifications and excuses after he is proven wrong.
Robert is a real visceris when it comes to religion. He has been through 9 religions in the past year and each time he finds a new one he has nothing but derogatory remarks to say about every other religion until he finds a new religion and repeats the process.