How big is the average penis? | Science | AAAS - Flacid penises
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According to a study in BJU International (BJUI), the average length of a flaccid penis in an adult male is inches. The average girth of a flaccid penis is inches. In fact, a study in the Journal of Urology found that the average erect penis size is similar for most adult. An analysis of more than a thousand measurements taken by sex researcher Alfred Kinsey shows that shorter flaccid penises tend to gain.