Down Under Skull

Skull enthusiast Web from Bayswater, Victoria, Australia sumbitted another of his skull creations. This is a pen and ink piece that he did in the 1990s.

This piece is full of fine details that help bring it to life. The cross hatch shading adds a textured depth to the smooth bones. The features of the skull feel more sunken. The addition of the lopsided blank sign is interest. When ever I see blank signs in artwork, I wonder what that sign could say. Similar to filling in the speech bubbles/balloons of comic strips, what would you have this skeleton's sign say?