A panacea that cures all your earthly ills in a manner most definitive.
Life in the fast lane often leads to a quick exit from life's freeway. You may recall Terry Kath, guitarist for the band Chicago. In 1978, while drunk, he shot himself in the head with a 'unloaded' gun. At first he had been fooling with a .38 revolver. Then he picked up a semi-automatic 9 mm pistol, removed the magazine, pointed it at his head, spoke his last words, "Don't worry, it isn't loaded," and pulled the trigger. Unfortunately for his head, there was a round in the chamber. Or that is one way the story goes.
Such inadvertent exits are easily avoided by exceptionless observation of three rules: Never point a gun at something you do not want to destroy. Treat every gun as if loaded, whether loaded or not. Never mix alcohol and gunpowder.
Perhaps I should add a fourth: Never mix dummy rounds with live rounds. Variant: Dummies should stay clear of guns, loaded or unloaded, and ammo, live or dummy.