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And of course, with the birth of the artist came the inevitable afterbirth - the critic.
— Narrator • History of the World: Part I

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A mock-solemn history lesson with a crude punchline: as soon as artists were born, critics followed like an afterbirth. The joke compares criticism to the messy leftover of creation, suggesting critics are an unavoidable, slightly unpleasant byproduct of making art.
Context reviewed