Entrance to a Tiki Bar

This is part of the decor as you walk down the stairs to Three Dots And A Dash, a Tiki Bar here in Chicago:



I can't explain,
I need to mull:
Outside my brain
There lives a skull.

Somehow or other, my body has grown
A jointed framework made of bone,
And here's a thing that's odder still -
This skeleton generally does my will.