Does an otherwise clean penis have meaningfully more bacteria on it than other parts of the body? I suspect that when I touch my oenks I'm transferring more bacteria onto it from my hands than vice versa, considering my donger mostly stays in my pants while my hands manipulate objects all day long.
Yes it does. Dark, dank places grow much more bacteria than other places. It also happens to be right near your poop hole.
It isn't that hard to make an agar plate and put it under a lamp for a few days. Why you try a swab of crotch juice and a swab of face juice and incubate them each and see what you get?