john or johns: a slang referring to sex workers’ or sex worker’s client(s).
Context: In reference to the specific slang of “john” in this context, I have found a research paper using this language. It does seem to be an old term, despite how I’ve never heard of it before.
Blevins, K. R., & Holt, T. J. (2009). Examining the Virtual Subculture of Johns. Journal of Contemporary Ethnography, 38(5), 619-648. https://doi.org/10.1177/0891241609342239