The moment at which two people, approaching from opposite ends of a long passageway, recognize each other and immediately pretend they haven t. This is to avoid the ghastly embarrassment of having to continue recognizing each other the whole length of the corridor. – Douglas Adams
Throughout the illness the most obviously exciting cause of the attacks was posture, stopping over a writing-desk; and he ultimately had to do such work either kneeling or at a standing desk. – Lawson Tait, 1882