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7 in 10 men stand when they pee instead of sitting down. Using UV light and fluorescent liquid, researchers at QS Supplies tested dozens of standing urination angles to reveal the splashback each one creates. Every time a man stands to pee, thousands of tiny unseen droplets fly onto the toilet rim, the underside of the lid and, in many cases, onto nearby walls and surfaces. The most common surface men aim at to minimise splashback is the rear wall of the toilet bowl, but in our tests, this technique actually created more misting and splashes than any other surface.