Dead as a stone
Tuesday, August 24, 2010 8:44:04 PM
HAYDON: Point is, what was this room used for?
JAMIE: Well, possibly for raising caterpillars, like this one.
HAYDON: Hey, for heavens sake watch out until we know what it is.
JAMIE: Och, it's as dead as a stone.
That's actually a Cybermat, cyborg used as advance guards and plague carriers by the Cybermen.
And seeing a bunch of Cybermats after "complete metal breakdown", they sure look like dusters. Where can I get one?
The Tomb of the Cybermen Season 5, Episode 1, Story 37