A closer look
For a brief, deeply weird period during early embryonic development, every single human being possesses a distinct, physical tail that extends well past the developing legs; around the sixth week of gestation, this vestigial structure contains several vertebrae, but the body quickly realizes the mistake and commands specialized white blood cells to dissolve the tail back into the embryo, leaving behind fused bones that eventually become your coccyx; we were all completely robbed of the chance to aggressively swish a tail during a frustrating argument because our immune system decided to eat it before we were even born, leaving us with nothing but a tailbone that hurts when we sit down too hard
