This article examines Chuck Palahniuk’s dystopian novel Adjustment Day (2018) as a satire of identity-based separatism, academic discourse, and radical social constructivism. By dramatizing the violent partition of the United States into racially and sexually segregated enclaves, including Gaysia, Blacktopia, and Caucasia, Palahniuk’s narrative illustrates the inherent instability of communities organized around rigid identity categories. Through grotesque exaggeration, parody, and hyperbole, the novel ridicules theoretical jargon while revealing the fragility of social engineering projects. The study argues that Adjustment Day operates as a double-edged satire: it counters extreme constructivist discourse by stressing physical embodiment and institutional cohesion. Yet, it also exposes the categorical essentialism of the enclaves it imagines. It further explores how the novel’s satirical vision resonates with contemporary American legal and political controversies on which identity-conscious policies are built.