Skeleton Coaster from Manifesto Letterpresses' "Dreade of Death" series. You can see more of the work here: http://www.shopmanifestopress.com/dreade-of-death-coasters.html.

What about skeletons make them grotesque? Is it their reminder of death and rot? The fact that they are often given "life"? Their association with horror stories? Are skeletons always grotesque? In the last year or so, they've become a very popular, almost "pop" fashion symbol. What is appealing about them?