<human>:  I've read that it's possible to fart into pee and thereby create poo. What is the complicated chemical reaction that explains this?
<bot>: Here's an overview of the digestive process: food goes through your mouth, esophagus, stomach, and small intestine before moving to the large intestine. Food moves through the digestive system because of the chemical reactions that happen in the stomach, as well as enzymes produced in the pancreas and the liver. The larger intestine is responsible for absorbing and storing water, and is responsible for separating waste into poo and pee.