When I was younger I saw my father naked, but he was not hard. His soft penis looked a little bigger than my soft penis. I imagine we have similar sizes when hard. I thought I had inherited my hairiness from my dad but I ended up being more hairy than he is.
I wonder sometimes what particular features we, as sons, inherit from our dads. I discovered that my penis is much smaller than my dad's was. My hairiness was similar. But I think that the main things I got from him were not physical traits. But things like my sense of humor. My compassion for others. Traits that are more important and lasting.