Sumday

Sumday: noun. 'Sumday, bloody Sumday' is a phrase in the banker jargon, which refers to the ominous day when the precarious and largely imaginary foundation that the world economy is built upon collapses and the banking community finally has to sum up and own up for the colossal disaster that they will have at that point caused. There are various theories, of varying scientific verisimilitude, as to what will happen after Sumday. Some particularly apocalyptic fanatics believe that communism will rise in its ultimate form and take over the world, while more realistic folk believe that the world will simply cease to exist, except for  a bowl of petunias and a sperm whale.