Do-Nothinger
A "Do-Nothinger" is a person who is employed by some sort of retail establishment who does nothing at all while customers are waiting. They will normally just act like they have a purpose, but they don't. This can be seen in banks, and other governmental agencies where there are consumers waiting in line wishing the employees would hurry up and get to them while they appear to be doing things related to the business at hand, but they are not.
Hello, I would like to apply for the position of Do-Nothinger ... I can do nothing better than they can.