Imagine someone in a skeleton costume. The costume is innocuous inasmuch as it is mere fantasy of dead bones over a living body of flesh. But, of course, there is a skeleton beneath that living body of flesh. Just as the skeleton is a costume over the flesh, the flesh is a costume over the skeleton. Flesh dies and reveals the skeleton, as if the skeleton is the death to come that is already inside the living flesh.
The bones (not skull) in this mesh are originally by momentum from blend swap, and edited by me to be more low poly. The license for these are here:
Skeleton by momentum https://www.blendswap.com/blend/6793 CC-BY License.