The average adult penis flaccid (not erect, or soft) is around 3 to 4 inches long. The average adult penis erect (hard) is around 5.5 to 6.2 inches long. The average adult penis erect is around 4-5 inches around (in circumference). This image based on a study done by Lifestyles condoms can give you a good look at what the size range between men ...
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