Engsh
Engsh is a cant that originated in Nairobi, Kenya in the 1980s. While Sheng developed in the poorer parts of Nairobi, Engsh evolved among the youth of the richer, more affluent neighbourhoods. Engsh is English based, but mixes Swahili, and other ethnic languages such as Kikuyu, Gusii, Luhya, and Luo. However, just like Sheng, it is a code, and therefore cannot be understood, for the most part, by standard English speakers. Both Engsh and Sheng originated as  secret codes against adults, to enable Nairobi youth to communicate with each other in a language the adults could not understand.