Once a friend came to visit a friend. In the room, the elderly grandfather showed him with a whirlwind, looked here and immediately pulled a screwdriver into his foot. Then he fell to the floor with wild cries. The grandfather was helped, and the visitor, who was frozen with his eyes opened, explained the situation. Grandfather has a prothesis, and this is his favorite trick - to wrap the screwdriver into the tree, shocking the guests. But age takes its own, sclerosis began, and grandfather began to forget what leg he did not have.