relizardgion
The belief that lizard-people run the world (a nod of thanks to Simon Whistler from YouTube for his inadvertently giving me this idea by speaking of lizard-people and then in his next breath quipping that "considering how many people actually believe this, perhaps they should start their own religion").
The reason that relizardgion is so difficult to dismiss/disprove is that there are so many horridly-wrinkly and ugly people around that they can indeed have only descended from lizards, just like evolution is so difficult to dismiss because so many humans act so "crude 'n' primitive" that those particular individuals must indeed have descended from apes. :P