Based loosely on the Chaos Theory. Each move starts with a reaction to the previous move and ends with an action incrementally greater than the previous. With chaos ending at the usual place.
Newton's third law was not to be denied, however, and so the teacher's leg likewise smashed into splinters. Then, as he landed on the floor, his other leg broke as well.
The floor also shattered, and he fell into the store-room below, landing on a pile of discarded PE kits. An ominous creak emanated from the walls of the school, and...