And about that Plymouth rock thing. That's not true either.

Like George Washington's cherry tree and Betsy Ross's flag, the Plymouth Rock story is another bit of invented history.

In none of the writings of the pilgrims is there any mention of Plymouth Rock.

The story of how the pilgrims landed there on the Mayflower didn't pop up until 120 years after the event, told by an old man who said he heard it from his father. There was no other supporting evidence.

And the stone known as Plymouth Rock is only a shadow of its former self -- one third of its former self, actually, after centuries of souvenir hunters chipping pieces off it.

Coming up later -- the truth about Santa Claus.