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
UK, 1921—‘frogspawn’: a jocular appellation for ‘tapioca pudding’ (also for ‘sago pudding’)—originated in schoolchildren’s slang—refers to the fact that both tapioca pudding and sago pudding very much resemble frogspawn, i.e., a soft substance like jelly which contains the eggs of a frog
Australia, 1939—someone whose presence spoils things for others; an odd person out—of unknown origin—perhaps a variant of ‘gooseberry’, as in ‘to play gooseberry’—perhaps an alteration of ‘gripe’—perhaps related in some respect to ‘sour grapes’
British, 1907—denotes considerable talent or ability to grow plants—in this phrase, the adjective ‘green’ refers to the colour of growing vegetation—1921: ‘green-thumbed’ (adjective)
British, 1906—denotes considerable talent or ability to grow plants—in this phrase, the adjective ‘green’ refers to the colour of growing vegetation—1914: ‘green-fingered’ (adjective)
Australia, 1865—to be less of a fool than one appears to be—this phrase plays on two uses of the adjective ‘green’: 1) denoting the colour of growing vegetation, grass, etc. 2) denoting an inexperienced or naive person
UK—literally, 1919: a dish consisting of meat served with two varieties of vegetable, seen as typical of traditional or unimaginative British cooking—figuratively, 1951: something simple and unsophisticated, or something indicative of simple and unsophisticated tastes
UK, 1849—transformation into a pumpkin; extravagant or absurdly uncritical glorification—coined after Hellenistic Greek ‘ἀποκολοκύντωσις’, the title of a travesty ascribed to Seneca, according to which the deceased Roman emperor Claudius, instead of being elevated to divine status, is changed into a pumpkin
Australia, 1960—very fit and well, in robust health—the image is of a bull strengthened by his living in one of the semi-desert areas of Australia in which the principal vegetation is mallee, i.e., low-growing bushy eucalyptus