Mixing of the skull with the Dallas Cowboys imagery is interesting. This is actually my wife’s t-shirt, but she does not like wearing ’em to the extent that I do. After wearing a uniform for the majority of my adult life, I am enjoying wearing tees when I go to Texas State University in San Marcos, Texas.
Indigenous Mexican art celebrates the skeleton and uses it as a regular motif. The use of skulls and skeletons in art originated before the Conquest: The Aztecs excelled in stone sculptures and created striking carvings of their Gods.[1] Coatlicue, the Goddess of earth and death, was portrayed with a necklace of human hearts, hands and a skull pendant. She was imbued with the drama and grandeur necessary to dazzle the subject people and to convey the image of an implacable state, according to Wikipedia.
The skull is a bony structure that forms of the head in most vertebrates. It supports the structures of the face and provides a protective cavity for the brain.[1] The skull is composed of two parts: the cranium and the mandible. In the human these two parts are the neurocranium and the viscerocranium or facial skeleton that includes the mandible as its largest bone, according to Wikipedia.
Tall T-shirt Tales 
My favorite Tee