Usually point him down, but occasionally to the side. When i was younger and would be hard or semi-hard throughout the day, he would point up most of the time. (nothing worse than getting caught with a boner that is being pulled down!)
I would let it hang to the side, usually leans to the left. I am right-handed. But the downside of this it that it ends up really bulging. And I am kind of massive down there, so it definitely shows. Sometimes I put it up, but it ends up falling down. Besides, I get hard for like literally nothing, so when I wear it up it grows out of my pants very quickly. So I end up tucking it under my sweaters, but it's super awkward. Stupid problems people have.
I'll usually place my penis to the left. Most of the time he'll stay there, but it does require the occasional readjusting. Though in public, it's easier to get him to go down than to place him back up to the left so that's my other go to position for him.
Reading this and I couldn't resist.
It's funny, I don't think we ever get told how or wear to point our man meat as we grow up, or at least I don't recall ever being told.
Generally I pop mine back into my pants pointing up following a good shape, generally it will then flop towards the left. I think I tended to rest him pointing uprights because I've fair size balls so pointing down can be awkward with my balls filling much of the space.
That all said, I've found that by resting my manhood towards the right rather than the natural left hand side, makes my bulge look much bigger and more interesting.
Just my thoughts.
Anyone else rest their man-meat to the right rather than left in order to create a slightly bigger bulge for display.