Thanks for the contest, Mark; those blocks are very nice!
bottoms up - drinking expression, rather like cheers, good health, or skol - the 'bottoms up' expression origins are from the British historical press-ganging of unwary drinkers in dockside pubs into the armed services (mainly the navy) in the 18th and early 19th centuries. Men who 'took the King's shilling' were deemed to have contracted to serve in the armed forces, and this practice of offering the shilling inducement led to the use of the technique in rather less honest ways, notably by the navy press-gangs who would prey on drunks and unsuspecting drinkers close to port. Unscrupulous press-gangers would drop a shilling into a drinker's pint of ale, (which was then in a pewter or similar non-transparent vessel), and if the coin was undetected until the ale was consumed the press-gangers would claim that the payment had been accepted, whereupon the poor victim would be dragged away to spend years at sea. Pubs and drinkers became aware of this practice and the custom of drinking from glass-bottom tankards began. The 'bottoms up' expression then naturally referred to checking for the King's shilling at the bottom of the tankard. (Ack J Burbedge)