They both have a reason and purpose. We are sensual, tactile beings from before our birth. And vaginal fluids and tissue swelling and stages of excitement are continually in flux. We are just beginning to explore the vast diversity and similarities for our passions and sex. Yes, there is a connection between sex and brain.
Sex is hardwired into our brains in ways beyond our imaginings.
Yes, life is full of joyous pleasure moments. He will take charge of his organ, it's a unique mystery surprise package for him. Some foreskins become fully retractable in toddlehood and some have to wait till 17 years, a vast difference in the blossoming and individuation of the sex in nature and desire. Mind, heart, gut, sex, a continual birthing and evolving of creation in every human being, a new fountain of love and delight, joy and thanksgiving. The parallel also applies to the female, the hymen ideally should be broken by her, with her will, volition and knowing. .