Unmentionables
From Tardis Wiki, the free Doctor Who reference
Within the Dalek City, Missy described the Doctor's TARDIS to the Daleks as "the dog's unmentionables", doing so while tickling a nearby Dalek's sense globes. (TV: The Magician's Apprentice)
Behind the scenes[[edit] | [edit source]]
Michelle Gomez confirmed on Twitter that her tickling a Dalek's bumps when referring to the TARDIS as "the dog's unmentionables" was improvised. [1]