the following is all cut & paste from
http://www.sexualrecords.com. I have no idea how accurate any of it is, except for the part about the Kinsey data which I've heard a few other places as well.
Largest Penis
Naturally we begin with the topic foremost on mens minds. The average penis size for white males is about 6.2 inches, so if you don't quite measure up, dont worry: penis size has relatively little to do with ones capacity to pleasure. Remember: it aint the meat, its the motion. The largest erect member in medical literature would be the 14-inch organ mentioned by Dr. David Reuben in his book
Everything You Always Wanted to Know About Sex (1969). Reuben didnt divulge any source for this figure, and there was no independent verification, so you may question his accuracy. The largest
medically verified penis on record is 13.5 inches long and 6.25 inches around, documented in the early twentieth century by Dr. Robert L. Dickinson. Other sources (Alfred Kinsey, Masters and Johnson, etc.) mention specimens ranging from 9.5 to 12 inches.
Then there are the dubious claims of immense penis size by various personages operating within the sex industry (read: porn actors). These claims are almost invariably false, the result of exaggeration and hype by unscrupulous dealers hoping to hawk more products. Take the legendary Long Dong Silver, for instance. Made famous by the Clarence Thomas-Anita Hill hearings, his one enduring trait was his supposedly 18-inch penis. Totally fraudulent, as it turns out; in fact, there are videos in which he appears only normal sized.
Incidentally, if you wish to pursue this matter on your own (anticipating a slow weekend, perhaps?) you measure along the
top.
Largest Penis by Race
"It is generally said that the penis of the Negro is very large," so wrote German anthropologist Johann Friedrich Blumenbach in 1795. "And this assertion is so far borne out by the remarkable genitory apparatus of an Ethiopian which I have in my anatomical collection." Louis Jacolliet, a 19th century French writer who spent three decades investigating penis size, had this to say: "In no branch of the human race are the male organs more developed than in the African Negro." Certainly, the belief in the well-endowment of the African race has an extensive history. But is it justified by the facts?
Going strictly by the Kinsey data, which still remains one of the most exhaustive studies on penis size to date, the average white male has a penis measuring 6.2 inches long and 3.7 inches around, whereas the average black male has a penis 6.3 by 3.8 inches, for a difference of 0.1 inches--not what you'd call statistically significant. When it came to flaccid length, however, blacks fared a little better: 4.3 inches long, versus 4.0 inches for white males. So it may be, therefore, that while those of African heritage appear larger initially, under actual working conditions things tend to even out. You should consider this a tentative hypothesis rather than a scientific fact, as there were only 59 black respondents to the survey, versus 2,500 for whites.
Smallest Penis
There are several instances in medical literature of penises that do not exceed 1 cm when fully erect, which doctors call an (ahem) "micropenis." Those unfortunate enough to be equipped with these diminutive organs can undergo reconstructive surgery to extend it to about 3 inches, which I guess is an improvement.
Smallest Penis by Race
Inhabiting the low end of the penile spectrum are those of the Asian persuasion, specifically those of Chinese, Japanese, Korean, or Vietnamese descent. Hard data supporting this claim comes from
The Definitive Penis Size Survey, a website maintained by Richard Edwards and dedicated to answering the imponderable mysteries surrounding man's most cherished appendage (the mysteries related to size, anyway). Among the interesting tidbits we gleam from his work, now in its sixth edition, is a graph correlating different erect sizes with race. The final tally: Caucasians on average measure 6.5 inches (16.5 cm), whereas the average Asian measures--5.5 inches (14 cm).
Assuming there's anything at all to that last study, a disparity of 1 inch would be statistically significant (as opposed to the 0.1 inch between whites and blacks in the Kinsey data), suggesting that the stereotype is true. Of course, there are almost always exceptions to every stereotype. Look at Yao Ming. and though there aren't that many Asian members to this board, there are some who are apparently quite well-endowed, just as I'm sure there are many white and black men out there with penises under 5.5".
As for Asian porn stars, I watch a lot of Asian porn, mostly of Japanese origin, and almost all of the Asian men I've seen in these videos are pretty small. But maybe this is because, unlike American porn, they don't go out of their way to try and find male actors with giant wangs? I don't know, just a possibility.