Earlier quoted context omitted.
> I know you’re exaggerating for poetic effect but this might actually be true in some parts of the human anatomy. I had an ingrown toenail fixed. There is a nerve that comes in and branches in two in the bug toe. In my toe it branches into three!
Even identical males twins don't have the same penis structure/routing. Thanks for sharing your own personal example (I am the twin, in mine). Another example is that of sciatia, which is much more prevalent when your sciatic nerve takes one particular path to get through the glutes. Other routed methods and sciatia is much less likely to be debilitating.
So that's the reason behind the dick pics. I thought it was just to show off, but it's for identification. Makes total sense now.