Here is the true story of a Gibson Les Paul guitar that had an accident with a concrete floor. Its unfortunate owner was working on it, putting in new pickups, when it fell off the bench due to a hoodie pocket getting caught on the headstock. The poor Les Paul cracked on impact. Later, its owner broke off the rest of it by hand.
It was a freak accident that left the guitarist feeling depressed for a while, as he was very fond of that guitar. But he learned a valuable lesson. After the accident, he started using a clamp vice to keep his guitars secure on the workbench.