Don’t Ask, Don’t Tell

Ethics A popular term for a philosophical stance on taboos in medicine—e.g., practising various resuscitative techniques (intubation, catheterization) on the recently dead; or ‘overdosing’ a person with intractable pain who is terminally ill with cancer
Military medicine A popular term for the military’s stance on homosexuality, a lifestyle that is not condoned or accepted, but is not punished if it remains undisclosed