[Yeap]

I have actually doen some reaserch on this. and here's what i can come up with.

with all ethnicity's the female of the same race has a vagina that is contouring to the men's penis.
black womens vaginas tend to be a tad deeper hence why black men are a tad longer on average.
same with asian womens vaginas. they are smaller on average and the mens are about a .25 shorter also to accomidate the womens vagina.