Brass pipe with a figurative bowl in the shape of a human head.
The pipe's bowl is a human face, styled with European physical characteristics. The face smokes a smaller pipe, meant to be a humurous allusion to an infinite series commenting on the plasticity of social relationships and universals of human experience. The pipe smokes a pipe, which may be thought of as smoking an even smaller pipe and so on. Similarly, the pipesmoker may be unknowingly being smoked, and so on.