Mines actually used as a unit of measurement in some countries.
So 1.
Are we supposed to take relativistic effects into account or just assume simple Newtonian measurements?
10 inches*
*this is an order of magnitude estimate
Internet inches or standard?
Mine would be of a size that all the girls would be happy, as in really really happy to see me . 
Along the top, while standing, with the penis perpendicular to the torso, from where it joins the body to the tip.
Basically, the only part that should be measured is the part that can actually fit into another person’s body.
What about the leftover inches?
perks up
It’s so large, women scream at the sight of it?!? Hellllooooo, handsome!
Huh. Funny. Both my wife and an ex- insist to me that “women don’t enjoy shoving baseball bats in their crotch” and that any notion that men have that women DO like that is “adolescent fantasy.” This post would seem to indicate otherwise…
Every time I watch porn, it’s obvious that the guys with huge dicks always wind up with their “excess” inches outside the pussy, which can only accommodate 7 inches comfortably. They have their fist around the base. Someone like Ron Jeremy or Peter North can only put the entire thing into someone’s ass or throat, which have much greater depth.
I honestly would not like to be any longer than I am. Besides, what really matters is thickness. By the way, the head of mine, when fully erect - which requires a pill at this stage of my life - cannot fit into the standard paper towel cardboard tube.
Have you tried?