I remember seeing a picture in Hustler magazine many years ago. Long before Photoshop was invented. It was a picture of a tribe of African Pygmies naked and carrying spears. Each had a normal size penis. But because of their small body, the tip of their penis reached down to their knees.
(When I saw the picture, I thought "Sure hope the Pygmy women can handle that.")

Personnaly I tried to paint my dick in black... I can feel no change