Rings of ineptitude are known to be fun at parties, but not good for much else; for the wearer of the ring suddenly finds themselves clumsy to exorbitant extremities--the entire dropping of one's inventory, the continual tripping over one's own feet while trying to walk, and awkwardly losing the grip upon weapons and other handheld objects. Mirror Lake revealed the magic properities behind this ring--although the ring has no face of any kind, its reflection gave the distinct impression that it was laughing at its current owner!

SOURCE(S): Zork Zero