May 17, · The poop emoji has one thing right — the brown coloring. Bilirubin, which is a pigment compound formed from the breakdown of red blood cells in the body, gets the credit for this oh-so-lovely shade. Jan 02, · Poop, also known as stool or feces, is a normal part of the digestive process. Poop consists of waste products that are being eliminated from the body. It may include undigested food particles, Author: Jayne Leonard.