Let's have a little honesty session here, gentlemen. Despite our claims to the contrary, occasionally we don't have the best aim when we pee. Here's some info that will help you fix that.
Some folks over at Brigham Young University's Splash Lab put together the above video, showcasing the physics behind urinal usage and how to minimizs splashback. You may have heard that it's best to aim for the side, but it isn't so much about where you aim as it is about what angle you strike the porcelain. It's best to try to hit the urinal at an oblique angle, that is, as far from perpendicular as you can get. The best way to achieve this is to get up close and aim mostly down, rather than directly at the back or side. It's a really well-crafted video.
It seems weird to me that this is the second time I've discovered a trick for not pissing all over yourself, but apparently this is a problem with many causes. Maybe peeing standing up isn't the greatest thing ever after all.
Aw who am I kidding, it's the best.
Urinal Dynamics: A Tactical Summary [BYU Splash Lab]