When Cousins Breed
Published: December 11th, 2007By Bucstats.com weblog

de · lu · sion [di-loo-zhuhn]
- noun
4. Psychiatry. a fixed false belief that is resistant to reason or confrontation with actual fact.
That fits, right? "Delusional"? I like to imagine this guy has a whole arsenal of signs at home including "THAT WASN'T CLINTON'S SPERM", "BRITNEY'S JUST MISUNDERSTOOD", and "THE VALUE OF PI IS EXACTLY 3".