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noun A form of conversational masturbation centered around niche subject matter and characterized by obscure-knowledge gamesmanship, hypothetical scenarios, and ingroup/outgroup verbal coding. Frequently results in the derailment of more balanced and inclusive group social interactions. verb To engage in nerdball. NOTE: Conversation topics qualifying for nerdball are fluid and context-dependent. They may include, but are not limited to, superheroes, science fiction and fantasy, TV shows, sports, fashion, academia, science, and politics.
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