On 21 December 2012 the Earth, Sun and the centre of the galaxy will line up. This influence will affect the centre of the galaxy instantaneously and a ray will shoot out from it arriving here immediately, killing us all.
At exactly the same time -
The planets will all line up pulling the Earth out of orbit.
Planet X, which is a brown dwarf star/ gas giant planet / rocky planet / comet / asteroid will pass close to the Earth causing a geographic pole shift.
There will be a magnetic pole shift caused by a solar flare / planets lining up / galactic centre thingy.
We'll all get fried by the heat of the solar flare.
Neutrinos released by the flare will heat the interior of the Earth which will turn into a molten ball. Except of course for a tittle patch predicted to remain solid by people who take your money to live there.
The solar flare will disrupt communications, our cell phones will not work and we will not be able to call Susie who is just across the room, so we'll all die as a result.
All the bees will drop dead.
The supervolcano at Yellowstone will erupt.
It's in the Bible / Koran / Bhagavad Gita / I Ching / Mayan calendar / any book as long as it is long, ancient and obscure
The Annunaki aliens from Nibiru will invade again after 3600 years to make us mine gold for them.
(Won't they be annoyed when they find we're all dead and they will have to dig it up themselves?)
www.2012hoax.org
What will actually happen? An entire generation of kids and a few sad excuses for adults will find out that not everything they read on the internet or see on the Hysteria channel is true.
Everybody? You mean every 15 year old airhead.