A flaccid elephant penis is normally sheathed between the hind legs. As the penis starts to engorge it may partially extrude, still flaccid. A semi-erect penis is almost fully engorged and extrudes forward from the sheath and downward toward the ground. During a full-erection the tip of the penis twitches for several seconds, curving upward toward the belly, forming an S-shape. The term Penis-Erection refers to both semi- and full-erections.
A young male walks along with a semi-erection. (Gorongosa, Mozambique)
