Deck 15
n. A workstation/office that is out of the way and not near the main areas of a workplace. Term comes from the series Star Trek: Voyager, where Deck 15 was the lowest deck on the starship.
Employee One: Hey, my office is on the third floor. How 'bout yours?
Employee Two: I'm stationed on Deck 15; the second sub-basement.
Employee Two: I'm stationed on Deck 15; the second sub-basement.