There have actually been a surprisingly large number of studies of human penis size. The vast majority of penises are between 5 and 6.5 inches. Anyone who says the average is between 6 and 8 doesn't know what they're talking about.
You can take pills for it (Make sure there all natural, I'm taking extendaquin) or do exercises such as the jelqing technique which is basically just grabbing your penis and pulling all the blood to...
It really depends on genetics. It doesn't HAVE to be any size. Depends on what you want to do with it. To urinate, 1 inch is enough. To get a woman pregnant, it realistically takes 3 or more inches.
Penises are the length that they are, on average about 5.5-6 inches when erect, because that is the correct distance to deposit semen in the woman's vagina near her cervix, in order to help promote...