Bile and fats
Bile has two functions. Number one: It breaks up fats.
The highwayman’s day job is a painter and decorator and he uses a tall ladder (gall bladder) and emulsion (emulsify – break up fats) on the walls.
Foods rich in fat are more difficult for the body to digest when compared to carbohydrate-rich foods. The gallbladder automatically releases bile into the digestive system whenever there’s a need for fats to be broken up.