"You're asking me about a pig in a poke!"
Those few words were described as having "terrifying" consequences for British democracy - after they were used by one of the prime minister's closest allies over the weekend.
Then, as if one complicated animal metaphor wasn't enough, a former prime minister warned politicians not to fall into an elephant trap.
So who's poking pigs, where do the elephants come in and what has it all got to do with Brexit?