Why Can’t We Build a Splash-Proof Toilet? →

The BYU team also learned that a “low angle of attack” produces the least splash. When pee hits the porcelain at a 90 degree angle, the splashback is terrible. But when the urine simulator aimed low—imagine hitting just above the drain of the urinal—the splash was more modest and not angled back at the urinator. This is also a good reason to aim sideways rather than straight at the urinal.