> A complete sample is a set of objects from a parent population that includes ALL such objects that satisfy a set of well-defined selection criteria.[3] For example, a complete sample of Australian men taller than 2m would consist of a list of every Australian male taller than 2m. But it wouldn't include German males, or tall Australian females, or people shorter than 2m ...

So, the entire set of all words spoken by South Park characters, by definition, is the population of all words spoken by South Park characters.

For this to be a complete sample, it needs to be a sample out of a larger population. What is that population?