TP: Interesting topic. As a male, I have noticed myself over the years that it seems that the slimmer males, not matter the race, generally do have longer cocks. Often you can break it down to the old wives tale, large hands, large cock. The body types of Ectomorph, Endomorph, and Mesomorph can distinguish the anatomy of a person. Guys who do take too many 'roids' can run the risk of sterility, impotence, and small one's. I think as well, where and how you are raised can be a determining factor, this is just a theory. For example, living up north, a man's 'johnson' is often packed into tighty whities and jeans which may interfere with natural developement. Whereas living in a warm hemisphere, allows less restrictive clothing. Just a theory. Race too is a factor by and large, which has been proven by science. Maybe in the later part of the 20th Century, diet has changed worldwide which has allowed Asian men to grow taller the past few generations and that too may be a factor why race is not a factor no more in penis size as it used to be. Overall, no matter the race, I too have noticed that slim males have longer cocks.