The statement "Coca-Cola can clean toilets, so imagine how it is burning your bowel" is factually incorrect for several reasons, primarily because it misunderstands the nature of chemical reactions and the human digestive system.

1. **Different Reactions in Different Environments:** The ability of Coca-Cola to clean toilets is attributed to its acidic properties, mainly due to the presence of phosphoric acid and carbonic acid. These acids can help in breaking down stains and buildup in toilets. However, the human stomach already contains hydrochloric acid, which is significantly stronger than the acids found in Coca-Cola. The stomach's acid is capable of breaking down foods and does not get "burned" or harmed by the comparatively weaker acids in Coca-Cola.

2. **Digestive System's Resilience:** The human digestive tract is designed to handle a wide range of foods and beverages, including those that are acidic. The lining of the stomach is protected by a mucus layer that prevents the acid from damaging the stomach walls. After leaving the stomach, the contents are neutralized by alkaline pancreatic juices in the small intestine, further reducing any potential harm from acidity.

3. **Misinterpretation of Chemical Reactions:** The assertion implies a misunderstanding of how chemical reactions work in different contexts. Cleaning effectiveness is not directly translatable to harmful effects on biological tissues. Many substances that are effective cleaners (like vinegar or baking soda) are not harmful to the body in moderate amounts and are, in fact, commonly consumed.

4. **Regulation and Safety:** Beverages and food products are subject to strict food safety regulations and standards that ensure they are safe for human consumption. The acidity levels in Coca-Cola and similar soft drinks are deemed safe for consumption by regulatory bodies around the world.

In summary, the claim oversimplifies and misrepresents the science of chemistry and digestion. While it's important to consume soft drinks in moderation due to their high sugar content and potential impacts on dental and overall health, the comparison to cleaning toilets and the effect on the bowel is not scientifically accurate.