"Zhavric" is a slang term, used on the Internet, to refer to a user that has lost all touch with common sense. Even when faced with simple common sense, a "Zhavric" will ignore the common sense and point out grammar mistakes, syntax errors, semantic arguments, or logical fallacies.
Tom: God doesn't exist. Anyone who thinks God exists is clearly an idiot. I mean there's no evidence and without evidence, the answer is clearly an indisputable false.
Bob: No evidence means "unknown", not "false". Don't be such a zhavric.