When cars had metallic bumpers, sodas were used to polish them, and popular acidic soft drinks has also been known to be a good toilet-bowl cleaner. Now, Greek gastroentrologists headed by Dr. Spiros Ladas at Athens University Medical School and Laikon Hospital have published a study proving that drinking Coca-Cola (the brand name provided in the article) can open up clogs in people with overly convoluted gastrointestinal systems caused by the ingestion of digested fruits and vegetables. They published their findings on Monday in the journal Alimentary Pharmacology and Therapeutics.