The male penis is an organ located in the lower abdomen that has various shapes and sizes. It is usually around 12 to 18 centimeters (4.7 to 7 inches) long when flaccid (not erect), but it can grow...
The penis is one of the most important parts of the male anatomy, but it can vary widely in size and shape from person to person. While some men may worry about the appearance of their genitalia,...
The shape of the penis head may have evolved to help remove rival sperm
A new study has found that the shape of the human penis head may have evolved specifically to aid in the removal of rival...