UK, 1967—something or someone that is utterly ineffectual—especially in phrases such as ‘as much use as a chocolate teapot’—variants: ‘chocolate kettle’, ‘chocolate fireplace’ and ‘chocolate fireguard’
USA, 1907—the (alleged) form of dementedness, leading to violence, that takes hold of a man who believes that his home has been invaded, or that his family has been violated—coined by attorney Delphin M. Delmas, who defended Harry K. Thaw in his first murder trial
USA, 1986—something intended to divert attention from something more important—refers to the fact that when two male gorillas confront each other, they throw dust in the air to distract one another—popularised, if not coined, by Henry Ross Perot
USA—1901 as ‘rocking-chair work’—1907 as ‘rocking-chair job’—a sinecure, i.e., an office or position providing an income or other advantage but requiring little or no work
U.S.A, 1932—also ‘the land of nuts and fruits’—a humorous, sometimes derogatory, appellation for the U.S. state of California—refers to California’s agricultural bounties and to Californians regarded as being ‘nuts’, i.e., crazy
1993—Used of the coach or manager of a soccer team, the British- and Irish-English phrase ‘to lose the dressing room’ means to lose the players’ respect.
Australia, 1996—a day spent in bed in order to restore one’s spirits; an unscheduled extra day’s leave from work, taken to alleviate stress or pressure and sanctioned by one’s employer—from ‘Doona’, a proprietary name for an eiderdown or duvet, hence a generic term for any eiderdown or duvet