Where does poo come from?

[75ConSE]

A little boy walks up to his Dad and says,

"Where does poo come from?"

Dad, pleased with his sons curiosity, replies:

"Well son, food passes down the oesophagus
to the stomach, where digestive enzymes
induce a probiotic reaction in the alimentary
canal to extract protein before waste products
descend via the colon and the rectum to emerge
as poo".

The puzzled little boy then says:







"Blimey, so where the heck does Tigger come from?"