Master's in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783/9359863878. The head of the penis called Glans consists of corpus spongiosum and has higher concentration of sensory nerve endings than the shaft of penis. The skin covering the penis is freely movable at the tip and is called prepuce. The cheesy substance called Smegma is secreted by prepuce and is accumulated underneath the prepuce, smegma should be washed away while taking bath. The colour, size and shape vary considerably from one male to another. Smaller, non-erect penis usually becomes larger when erect penis and vice versa.