This was not what was expected. Although, as it happens it was the officially-designated day for something unexpected to happen. After all, it was discovered by someone involved in the vital Health and Safety field that one of the most common causes of accidents in the workplace was when something unexpected happened.
Therefore, in an attempt to reduce the number of accidents in the various workplaces throughout the EU, unexpected things were outlawed and anything that happened in the workplace which was not expected was made illegal.
Of course, as a typical bureaucracy the EU health and Safety executive expected that once they had made something illegal it would henceforth stop happening. Satisfied they had done their job they turned to the vital matter of cheese cracker safety and the heartbreak caused by premature breakage of the cheese biscuit during application of the cheese, especially in the case of so-called soft cheeses, whose often woefully inadequate spreadability often results in cracker-breakage despondency.
However, much to the surprise and consternation of the Bureaucracy – and thus in direct contravention of their new law – the unexpected still happened in the workplace, which deeply upset those tidy minds that wanted everything in its place and in order.
Therefore, in an attempt to tidy up the disparity between what the official mind saw as desirable and the awkward messiness of reality they decreed that henceforth the unexpected could only happen on an officially-designated day.
However, to no-one else's surprise the first officially designated Day of the Unexpected passed off entirely without incident. Much to the chagrin of those who had organised the special Europe-wide celebrations to mark this new day in the calendar.
Still, there is always next year – unless something unexpected happens.