wolf’s head
n.— «I’ve heard that described as a “wolf’s-head” in UK parlance: where you wish you could grow a wolf’s head, so you could quietly chew off the arm she’s lying on, rather than risk waking her.» —“Re: Currently on topic for USAians – Canadian advice to cure a hangover!” by Paul J. Adam Usenet: sci.military.naval July 8, 2007. (source: Double-Tongued Dictionary)