Erotics of the Feet
The earliest record of eroticism associated with feet come from stories of the Hindu god Shiva, ancient Greek erotic poems and the famous 48 entries dedicated to feet in a Qing Dynasty sex manual. Feet are such a persistent feature of erotic fetishes today that Neuroscientist V.S Ramachandran proposed a possible link between genitals and feet because they occupy adjacent areas of the somatosensory cortex. Whether that's true or not, with over 200 000 nerve endings in each foot, they are incredibly sensitive to different kinds of stimuli. If you want to deepen your appreciation of this, come and explore the eroticism of the feet.
Play Piercing
Play piercing can produce an endorphin high, which can last for hours and can induce orgasm in many of the people who experience it. It is body piercing done for the purpose of enjoying the experience rather than producing a permanent body decoration. The experience of multiple piercings in an erotically or spiritually charged context is something to experience.