White Elephant
An old farmer is tending his crop one day when he spies a white elephant trampling the edge of his field. He knows that there are four different types of elephants in his area: red elephants, blue elephants, purple elephants, and white elephants.
To kill a blue elephant you use a blue elephant gun, to kill a red elephant you use a red elephant gun, and to kill a purple elephant you use a purple elephant gun. However scientists have so far been able to create a white elephantâŠ