<![CDATA[This study aims to describe semantic language errors found in posts from the X account @Jek__ and examine their potential implications for Indonesian language learning at the junior high school level. The study employed a descriptive qualitative approach. Data consisted of posts from the X account @Jek__, collected through observation and documentation, while teachers’ perspectives on their potential use in learning were obtained through interviews with four junior high school Indonesian language teachers. Data were analyzed through data reduction, data presentation, and conclusion drawing. The findings identified 68 instances of semantic language errors, comprising 50 diction errors, 9 cases of ambiguity, 8 cases of pleonasm, and 1 case of hypercorrection, indicating that diction errors were the most prevalent category. The interviews further revealed that the teachers perceived these social media data as relevant and potentially useful contextual teaching materials because they provide authentic examples of language use closely related to students’ everyday digital experiences. Therefore, the findings demonstrate the potential pedagogical relevance of social media-based language errors as contextual resources for Indonesian language learning; however, their effectiveness in improving students’ language skills requires further classroom-based investigation.]]>
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