Bones in the sand

Some times we wear down and wear out. Our tolerances become low and we act in ways that surprise our friends and co-workers.

I don't know if this is actually based in reality, but I sorta figure that in instances like these we represent a desert. That perhaps our energy is used up, sorta like sand being blown away from bones hidden. And in moments of weakness; our countenance exposes the bones from the past hidden within.