Well, my handle comes from my job, we take your water from the source, treat it and deliver into your house. So in a sense, we are plumbers,(you know, gluing, soldering, etc.) and our work helps your pipes and fixtures last longer, thus making the other plumbers look good, but we never usually get any credit, thus the "Unsung" part.
(And no, I don't flash my asscrack at people.)