I'm guess that's some sort of threshold for normal, not actual "average" size. Or maybe the weenie-trends in Cairo are to blame for the low numbers?

Won't relate any personal observations, except, if those figures are true, Virginia penises are like lake Wobegon children.

I posted about this topic on my blog as well. It appears that the study author acquired those numbers from a different study about men who sought penile enlargement surgery, so as you might guess it's a bit on the small side. If you use their general guideline, though, of 2-2.5 standard deviations as being the accepted definition of "small" (which makes some degree of sense, I think, assuming a normal distribution), and then look at a more representative sample, such as a 2001 study of men and condom usage that showed an average of 5.6 inches, then you get a more plausible lower end of "normal": 3.7-4.1 inches.

By the way, I just linked to your blog -- hope you don't mind!