UK, 1871—a paper bag, balloon, etc., filled with flour and thrown or dropped such that it bursts and disperses its contents over the target on impact, usually as a prank or as part of a protest or public demonstration
1843—a representation of a human skull or skeleton, originally crafted from sugar and intended to be eaten and often given to children as a gift around Día de Muertos (Day of the Dead)
a cake made with the ingredients available during wartime—first used during the First World War (1914-1918)—came back into usage during the Second World War (1939-1945)
UK, 1883—to stay at a hotel, inn, etc., that provides a bed for the night and breakfast the following morning—to stay at an establishment known as a ‘bed and breakfast’
Australia, 1934—an inexhaustible supply of something, especially money—alludes to The Magic Pudding (1918), by Norman Lindsay, in which a pudding instantly renews itself as it is sliced or eaten into
1975 as ‘French chef’s kiss’—a gesture used to indicate that something is excellent or perfect—also a perfect or excellent person or thing—alludes to such a gesture stereotypically made by a chef on tasting a delectable dish