Originally Posted by
Mongo The concept of a homunculus (Latin for "little human", plural "homunculi"; the diminutive of homo, "human") is, most generally, any representation of a human being. It is often used to illustrate the functioning of a system. In the scientific sense of an unknowable prime actor, it can be viewed as an entity or agent.
So that's a five-dollar word to describe the concept of the angel and the demon sitting on your shoulders.
"Whoa. My shoulder angel."