What Happens When a Bullet Hits an 'Unbreakable' Prince Rupert's Drop

What sort of object can shrug off a bullet, but shatters with just a little touch? The answer is a Prince Rupert’s Drop, an object formed from molten glass simply dropped into water to cool. In glorious slow motion, you can watch as the bullet bounces right off the wide end of the drop, sending out shock waves that then rattle the rest of the structure and cause the thin end to break, resulting in the entire thing exploding.