By Nico Lang   Even if you don’t have a small penis, you might think you do. In a June 2007 report in the urology journal BJU International, researchers found that while an overwhelming majority of female respondents (85%) were happy with their partner’s size, 45% of men exhibit symptoms of “penis anxiety,” wishing their member were bigger. Only 0.6% of guys have what is medically classified as a “micropenis” — measuring less than 3 inches — but many