Because the rest of the letters are not-E.
An e-nigma.
On the Inkernet.
Student: "So we know when to start Christmas shopping!"
It's Christmas, Eve.
Noe(L)...no "L"
HERE LIES FRANKENSTEIN'S MONSTER. MAY HE REST IN PIECES.
Logical Answer It is the Art of Taking Rest Before Getting Tired.
By hare mail!
The letter D.
Santa Clues.
Elephanta Claus!