piece of work (
http://definr.com/piece of work)
n : a product produced or accomplished through the effort or
activity or agency of a person or thing: "it is not
regarded as one of his more memorable works"; "the
symphony was hailed as an ingenious work"; "he was
indebted to the pioneering work of John Dewey"; "the work
of an active imagination"; "erosion is the work of wind
or water over time" [syn:
work]