Quote:
Originally posted by Ross
It depends on when a boy finishes puberty. He could finish at around 14 years old, or he could finish at around 20 years old, but usually a boy usually finishes puberty between 15 and 17 years old, with an average penile length of 6 inches.
The penis usually stops growing between the ages of 18-21.
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But then again, I have heard stories of it growing even later in life. Weird.