How do borrowed words from other languages enter slang?

Borrowed words enter slang primarily through the interaction of subcultures with the dominant culture or through traditional linguistic exchange. Rather than creating many new terms from scratch, most subcultures draw from the contiguous language, which includes established borrowings from foreign languages and Indigenous peoples of the Americas tongues.1

When a subculture is structurally tight, its language remains largely internal; however, as these groups weaken or increase their contact with the broader society, their unique vocabulary—including any previously borrowed terms—diffuses into the dominant culture as slang. Once these terms enter the mainstream, they may be adopted, modified, or naturalized as loanwords to express new or existing concepts.23

The process is often accelerated by mass media, which can introduce specialized terms from in-groups to a wide audience simultaneously. While some slang terms are short-lived, others persist for centuries, eventually becoming part of the standard language if they lose their original edge or shock value.24