What are the characteristics of a full grown adult penis? In the Tanner scale it asks this, and I was wondering if I would fall into that category. My penis is 6.5 inches erect and the girth is 5 inches.
The adult penis increases in size when erect. The glans takes on a darker color and its surface texture is rough. The bottom edge of the glans, called the corona, flares outward when the penis is erect. The skin of the penis is thin and the veins are easy to see. When erect, the veins will stand above the surface, especially the one on top.