According to Adano Ley (Swami Nitty-Gritty) …

“Kundalini is the sperm oscillating its tail.”

“Entire Absence of the Coccyx is a rare form of congenital deformity. The author has seen but two cases, and both of these in men who consulted him for relief from some other painful affection of the anus. Both were congenital, and did not interfere in any way with the functions of the anus, rectum, or bladder. Indeed, they did not cause any disturbance of sufficient importance to attract attention to these parts. The place of the bone was filled by dense fascia, with which the ligaments and muscles usually attached to the coccyx appeared to be continuous.”

Sometimes the creative power of the coccyx turns mutative.

According to the same source …

“Nearly all of the various structures of the body have been found in the different forms of sacro-coccygeal tumors and cysts: Fluids, — spinal (spina bifida), albuminous, creamy, red, yellow, straw, or brown in color, — alone or together with cheesy matter, bones (short and long), hair, teeth, muscular fiber, brain-substance, blood, cartilage, fat, mucus, and the bones of the sternum. Again, various appendages may have their origin in these tumors. Supernumerary fingers, toes, hands, feet, arms, legs, and fleshy projections, a tail, and penis have all been seen projecting from growths taking their origin in the sacro-coccygeal region. In most instances, congenital sacro-coccygeal tumors are of sufficient size at birth to attract the attention of the physician in attendance. Pithas’s case, however, is an exception to the rule. He amputated a third leg attached to the coccyx of a young woman 20 years old. In this case there was only a slight enlargement of the coccyx at birth. Senftleben removed a small hand attached to the caudal bones, and Mason extirpated a lymphadenoma the size of a fetal head. Hutchinson removed a tumor containing a sternum and brain-substance; but one of the most interesting cases of coccygeal tumor is that of Chebbs, in which a fleshy mass, two inches (5 centimeters) long and a half-inch (1.27 centimeters) in diameter, projected from the spine, in the end of which was an orifice connecting with a canal running the entire length of the tumor. It looked exactly like the penis of a boy six years old.”

The vowel “A” resonates with the coccyx, “E” with the sacral vertebrae, “I” with the lumbar vertebrae, “O” with the thoracic vertebrae, and “U” with the cervical vertebrae (and at the U-shaped hyoid bone in the throat).

“Flight of the Bumblebee.”

“The coccyx makes the sound of a vacuum cleaner.”