Skulls have many meanings such as danger, death, and mortality. Humans have been fascinated with the human skull for as long as we existed.  It can strike fear and warn of destruction like when the pirates flew the skull on their flags.  To some, the skull is cool, badass, and a rebel symbol.  During Halloween, the whole country will use skulls in their decorations and activities.  There's no one reason to like skulls, but if you do like skulls, the skull baoding balls are certainly a unique eye catching set!