Please do not add mention of pop cultural references, continuity notes, trivia, or who the targets of a given episode's parody are, without accompanying such material with an inline citation of a reliable, published, secondary source. Adding such material without such sources violates Wikipedia's policies pertaining to Verifiability, No Original Research, and Synthesis.
While a primary source (such as the episode itself, or a screencap or clip from it at South Park Studios) is acceptable for material that is merely descriptive, such as the synopsis, it is not enough to cite a primary source for material that constitutes analytic, evaluative or interpretative claims, such as cultural references in works of satire or parody, because in such cases, such claims are being made by the editor. This is called synthesis, which is a form of original research, and is not permitted on Wikipedia, regardless of whether one thinks the meaning of the reference is "obvious". Sources for such claims must be secondary sources in which reliable persons, such as TV critics or reviewers, explicitly mention the reference.
In addition, trivial information that is not salient or relevant enough to be incorporated into the major sections of an article should not be included, per WP:PLOTSUMMARIZE and WP:TRIVIA, and this includes the plot summary. As indicated by WP:TVPLOT, the plot summary is an overview of a work's main events, so avoid any minutiae that is not needed for a reader's understanding of the story's three fundamental elements: plot, characterization and theme. This includes such minutiae as scene-by-scene breakdowns, technical information or detailed explanations of individual gags or lines of dialogue.
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