A woman in Hertfordshire, England, called the local police emergency service to ask if it was still Christmas Day and to wish the police a Merry Christmas.
She called police on December 26th. There was clearly no emergency. After nonchalantly asking the emergency call-taker how he was, she then asked: "Is it still Christmas Day?" to which the man answered "No, it's Boxing Day."
The Police decided to release the recording as part of an appeal, particularly over the festive period, not to make crank calls, as it could put someone's life at risk.
The maximum penalty for hoax call offenses in the UK is up to six months in prison and a fine of £5,000. (info from http://www.eitb.com/)
Hear the call on Youtube.