During a chemistry lesson once, SP and DE put lots of splints up the spout of a tap for no reason whatsoever. They had just gone completely mad. This incident was followed by other such acts of madness, such as SP dropping a stirring rod down the sink, and DE keeping his work under the tap as long as possible before a drip came out, which resulted in it getting very wet.
One day the tap splints will move in such a way that they will totally block up the entire water system of the school, causing a total collapse of the entire school system, and the destruction of the universe.