The prefix “dodeca” means twelve, and derives from a Greek root.
We are already seeing a profusion of claims pertaining to the world ending in 2012, all of which are abject nonsense.
I should like to propose that those who make such claims need a banner under which to rally. We already have “birthers” and “truthers” but what to call those who promote a 2012 apocalypse?
Being that dodeca means twelve, how about “Dodecheads”? Please do not allow this term of endearment to ever become a grievous slur such as “Dodickheads.”