The article examines the phenomenon of youth slang as a form of linguistic variability and as one of the factors in the evolution of the Russian language. Based on the analysis of lexical, morphological, and syntactic aspects of youth speech, the mechanisms of its interaction with the literary norm are identified. The study employs methods of corpus analysis, observation, and comparative description. The results show that youth slang not only reflects sociocultural changes but also enables the renewal of the language system by introducing new words, forms, and stylistic devices. At the same time, tension remains between the innovative potential of slang and the requirements of linguistic normativity. Keywords: youth slang, linguistic variability, language evolution, sociolinguistics, Russian language, lexical innovations, language norm.