On June 30, 2009, the price of oil jumped $1.50 per barrel during the night. This was curious since no major political event had taken place. Well, the Financial Services Authority just released a report that a drunk trader purchased futures contracts on 7 million barrels, which pushed the price up. Even more ironic, the trader was so drunk he didn't even remember doing it. See article here, CNBC.
Dolvin, Steven D., "Rogue Trader" (2012). All Chapters. 43.