How you put it is how it stays. If you always place your buddy in your underwear in the same position, when it gets happy and inflates it’s going to have the most common shape it has at rest. If that was tilted to the left, it will be tilted to the left. If you rest it tilted to the right, it will tilt to the right in passion too. Apart from unesthaetic, when you enter your loving woman, it will reach her only to one side. And that can be frustrating for her. And for you: think of all the fun her other side might have offered you if only you could reach it.
Upright avoids silly tilts, but is not ideal either, as it will end up challenging your ability to embrace different angles.
What you want is diversity: one day to the right, another to the left, one day upright, the next downwards. Let your baby find comfort in any direction and when it grows all proud it will be able to explore your Lady’s entrails in all directions too, wherever she’d like you to tickle her today, wherever you’d like to get to.
Good luck 🙂