It reminds me of capping pranks at university. I can remember my own class contemplating the release - thankfully not for long - of chickens into the Otago University library.
It was shot down because it was dumb, cruel and unimaginative.
We were a land surveying class, and previous years had done much better: professional signage showcasing the "high rise development" of Dunedin's Octagon.
It's in memory of this that I tip my hat to the Kuranui seniors. The signage looks very believable.
The number one key to a good prank is it should be victimless, apart from being a minor nuisance and perhaps (if it really comes off) some disbelieving outrage. Youngsters who have the energy and imagination to create them are likely to carry those skills into the workforce, and channel those abilities into being creative, as well as having a positive attitude.
It is sometimes remarked that those who play pranks have too much time on their hands.
The seniors will be facing NCEA exams soon, and one would think that was more than enough to occupy an idle mind.
For my part, I'm delighted they found room for the prank, a moment of relief when things are about to get serious enough.