Sluggerlug
From Tardis Wiki, the free Doctor Who reference
The sluggerlug was a creature with a segmented or armoured tail. It lived between a million and one hundred thousand years apart [statement unclear]from the Vardans. (IDW: The Forgotten)
The Sluggerlug was the origin of the phrase "two shakes of a sluggerlug's tail", a phrase which the Third Doctor used occasionally. (DW: Island of Death)
