pyramidiot

noun1

1. •
   (disapproving) pyramidologist; one who believes prophecies are encoded in Egyptian pyramids.

   • It has been customary in some circles to dub them ' Pyramid-ites ', but after all ' Smyrniot ' and ' Cypriot ' are used for ' those of Smyrna ' and ' those of Cyprus ', so why not Pyramidiot ? — 1935