Poetry on the Underground

For years, Transport for London's lawyers chased the hilarious London Underground Anagram map around the internet, only to find that it was as hard to catch as a train to Mornington Crescent. Now, it seems the guerilla sign writers have ventured from the web right into TfL's secret underground bunker.

My favourite? "For a more efficient service, please alight at the next stop where a team of heavily drugged sloths will drag you to your destination."