Not me this time.
Step forward the son of my chiropractor, who, on the final day of term (and his last) at a well known grammar school, got some friends to deliver and let loose into the main building (endless corridors, classrooms, canteen, staff rooms, main hall etc.) four sheep which were individually sprayed with the numbers 1, 2, 4 and 5.
I bet that took a while.
At my school we had the polystyrene ceiling tiles that you could easily push up and get up into the roof.... On our last day we may well have put fish in the ceilings of just about every room in the school!