I don't know which percentage of people learned about the anatomy of men and women of different races via porn, but the number has to be rather large (pun intended) because the myth of size has become something of an urban legend.

According to distinguished American researchers Masters and Johnson, there is no correlation between race and penis size. Out of a sample group of 300 men of different races, the largest flaccid penis was 5.5" long and the shortest was 2.25" long. In the erect state, nearly every penis was the same length of 6"-7" for an average of 6.5". More on this study here.

It is also worth noting that for women's anatomy, most of the nerve endings that create pleasure are in the first 3" of the vagina, so anything over the average length actually gets to be a pain; no woman wants her cervix pounded.

For those men concerned about *showing* more while erect, you should keep your weight down because fat layered around the pelvic area can actually hide as much as 1" of your length.

Sure, there are genetic freaks of different races, but that doesn't translate to being the norm for certain races. So, turn off that porn if you are looking for anatomy lessons.