There is a such thing called abnormality or deformity, and it is effective to any form of a living being. It will cause a form of retardation to the targeted area! In the majority of the human population there are normal cases of human beings, and on the other hand we have those with these indifferences. Long story short' Mutha Fuckers Got retarded, and deformed ass dicks. No matter the race, and the low budget porn proves it! That's why the dicks won't stay hard! But the higher end porn is altered to where they enhance the disfunction or edit it.