Mice in the underground story

Commuters left fearing vicious 'Farringdon mice' after prank sign warned them to tuck their trousers in
London commuters were left fearing their toes may be nibbled by a gang of wild mice on the underground today, after a prankster put up a sign warning them not to become the “victim” of an "attack".

By Hannah Furness2:20PM BST 28 Aug 2012

Just this weekend, the residents of Essex feared for their lives after a lion was reported to be on the loose in a field.Now, a gang of rampaging mice appear to be striking fear into the hearts of London commuters, after being reported to be nibbling their toes.
Passengers at Farringdon station were left puzzled after an official-looking sign warned the mice had been “attacking” customers.
The handwritten notice advised: “Please place the bottom of your trousers into your socks to avoid being a victim of the Farringdon mice”.
The sign, which was immediately photographed by baffled passengers and placed on social networking site Twitter, has now been viewed by thousands of people.
Some wondered whether Transport for London might be able to contact a farmer’s wife, while one canny observer mused: “Do they need a big cat? I've heard one might be free.”Despite the excitement, the sign was quickly revealed to be little more than a harmless prank, with TfL denying all knowledge of a mouse problem.
A spokeswoman confirmed: “The writing on the whiteboard at the station is not an official TfL message and has since been removed.
“We do not believe it was written by a member of station staff and we’re not aware of any problems with mice.”

This  story could be converted into a mockery of horror genre, playing out like a thriller but then ending up being just mice people were scared of.