Well, because this (scroll down to gross head door decoration) wasn't gross enough in it's stickiness, it has now morphed to a new level of disgustingness.
Some of the juicier bits:
(Clicking on this one will make it bigger.)
Notice the lovely dead bugs and bug parts stuck to the tongue. Yummy. (This is full size.)
OK there's a really gross red bug stuck to the eyeball (not to mention more bug body parts). (Also full size.)