A party reveler bites into a London tube map sticker in a carriage on the London Underground during a Facebook cocktail party on the Circle Line on May 31, 2008 in central London, England. Last night was the last evening when Londoners could consume alcohol on public transport. The ban, introduced by the new London Mayor Boris Johnson, is an attempt to clean up unruly behavior on the London public transport system. By Daniel Berehulak/Getty Images.

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