I was wondering if anyone out there can tell me the answer to this complex question. What/how make's the shape of the penis meaning ones that curve sharply upwards or curve away from the body and up(Banana up) to ones that stick straight out in a perfect flat line to the ones that curve downwards(Banana down) some go slightly to the left or right i have seen some that when hard almost have a right angle shape. When a penis is flaccid it is impossible to tell what shape it will take once engorged with blood. Now remember guys this has nothing to do with size cut or uncut or race creed or colour. I am amazed with cocks that are huge and simply defy gravity then some that are huge and can not hold their head's up. Any doctors or physician's out there that have studied this are welcome to comment.