In Kenya today, there is a disconnect between the national language policy and peoples' language use in actual practice. While the government promotes Standard Swahili as a national language to facilitate interethnic communication and alongside English for use in official functions, my research findings indicate that many young Kenyans do not adhere to the said national language policy. Instead, they have embraced unauthorized nonstandard language varieties such as Sheng for distinctiveness among other reasons. I argue that these young Kenyans find the other readily available languages insufficient for their communicative needs, and for negotiating desired distinct social identities. However, while embracing these alternative linguistic forms, speakers engage in social practices that suggest both resistance to and conformity with the official language ideology and local cultural frameworks.The research study was inspired by three common claims about Sheng which had not been researched before: 1) that use of Sheng among students interferes with their mastery of the officially sanctioned Standard Swahili and English; 2) Sheng unites speakers from diverse ethnic backgrounds; and 3) Sheng has spread beyond its perceived origins, Nairobi. In order to investigate these claims, I conducted an intensive ethnographic study in two co-ed schools in Nakuru and Mombasa, two