Read about the fake poems on the underground over at not.so.soft and last night on the way home saw one too.
I was just scanning the tube ads in an inebriated stupor (as you do after drinking five pints) and the word Esso jumped out at me.
I re-scanned and saw that what I had previously dismissed as a poem was in fact an anti-Bush/Esso rant based on Tyger Tyger, it even had an apology to William Blake where they normally show the copyright info.
I can’t recall the wording now but it was vaguely humourous in a sub-O’ level manner.
Hats off to the cleverness of the idea and the execution of it though.