THE REAL REASON WHY BLACKS ARE SO BIG, STRONG AND LONG DICKED

referring to the OP i'd say that the "breeding" idea is bullcuckolds brownie, but selecting only strong africans to take to the americas (and only the stronger ones surviving the hardships of the long journey aboard the ship) certainly had an effect as to the physis of blacks in the americas.

at the same time i'd guess white people did everything to deprive blacks from higher levels of education and to participate in the majority society; that's where most stereotypes come from.

as to the whole penis size debate: i don't care if the average white or black dick is 0,5 inches larger or not. have you ever looked at a ruler? 8 inches v 5 inches makes a difference, while 7 v 6.5 hardly does.