Shocker?! Not really.. One in five Americans has admitted to peeing in a public swimming pool, according to a new Purdue University survey. Besides being disgusting, peeing in the pool may be seriously harmful to your health. Researchers looked at what happened when uric acid, a byproduct of urine, and chlorine combined, and found dangerous chemical reactions were a result of this unholy union. The combo kicks up cyanogen chloride, a gas that can harm the central nervous system, heart and lungs if inhaled. Go ahead and act surprised now.. LOL