a Blankenhorny person will just keep stating his believes as truth over and over again and when someone tries to proves him wron he'll just argue that he does not need to actually PROVE what he's saying, that it is just right and that other people have said likewise though he can't recall who, nor the exact wording nor any other evidence. but that the evidence is there and we just refuse to admit it.
nevertheless any contradicting evidence are just being dismissed as "I've never heard about such argument and it would surprise me if it really were true, which I believe it isn't"
the word Blankenhorny goes back to David Blankenhorn who was "expert" whitness in the Perry vs. Schwarzenegger trial whyle completely failing to show any expertice, having any reverences or to have done any proper review or any peer-reviewed research AT ALL.
--> "good god man, you are being such a Blankenhorn right now. (i.e. you are Blankenhorny)"
--> "good god man, this argument is sooo Blankenhorny"