Penis size is determined by a variety of factors — the biggest being human genetics, which can produce incredibly varied, sometimes curious.
Now at 31 at a family campout my dad is 66 I saw his dick in the shower my soft dick is inches long and inches girth. And his dick was over twice as long.
My dad's dick and mine look almost exactly alike. Except his has a small freckle on the head. He's got some nice low-hangers, too. I love rolling.