I was told this from a female doc, forgot the exact term for her field though... lol, she informed me of this after i made a joke about being an albino blackman from the wasit down.

"black men are of no different size then white men, while they may appear larger it is usually only an affect do to the dark color. On average the black male penis is average, with alot less differntial on size then that of the white penis. While usually black oens range from 4" to 10" the white range is normally 2"-12" while the 12" is rare, it is more common then the black population, and the same goes for the 2". Average penis size is based on all races considered, the average AMOUNT of penis size for white males is only 4" though.