Physicists Create 'Urine Black Holes' To Solve The Splashback Problem
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Why is my pee sinking to the bottom of the toilet and not mixing in with the H20? - Quora
Why is urine sinking in the toilet and not mixing with water? - Quora
Some toilets have a sink attached to the top, so that you can re-use the water in the next flush. Millions of liters of water are saved this way! : r/DesignPorn
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Why is urine sinking in the toilet and not mixing with water? - Quora
20 things you should never flush down your toilet
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Pee pics: you've been warned | BabyCenter
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