USA, 1936—psychiatrists or psychiatric workers—refers to the traditional use of white coats by medical personnel—often used in the stereotypical image of a mentally-disordered person being borne away to a psychiatric hospital by psychiatric workers
USA, 1990—a method of caring for a premature newborn in which a parent holds the infant on their chest in skin-to-skin contact—from the fact that kangaroos give birth to still-developing foetuses, then nurse them in their pouches
African-American, 1966—different things please or satisfy different people—‘stroke’ denotes a comforting gesture of approval or congratulation, and, by extension, a flattering or friendly remark
USA, 1936—the facts about sexual reproduction, especially as explained to a child—when this phrase appeared, ‘birds’ and ‘bees’ had long been commonly paired in literary allusions
USA, 1917—a method of treating a drug addict by sudden and complete withdrawal of the drug, instead of by a gradual process—alludes to the goose pimples, resembling the skin of a cold turkey, that a person experiences as a side effect of the treatment
reluctance to attend school or work, or a reduction in working efficiency, experienced on a Monday morning—UK and USA, 1908; Australia, 1910—the suffix ‘-itis’ is applied to a state of mind or tendency fancifully regarded as a disease
state of South Australia, 1952—a traffic warden—from the fact that South Australian traffic wardens licked the adhesive parking tickets in order to stick them to the windscreens—hence also the verb ‘sticker-lick’
the movement of the hand in brushing away flies—first recorded in 1967 in a speech by Fred Chaney, Member of the Australian House of Representatives—variants: ‘the Queensland salute’; ‘the Barcoo salute’