Even the OED examiner would give you a failing grade if you threw into your essay or at your job interview a couple of "severallys" and "me sefs", let alone "next tomorrows" or "konks", which even the average Nigerian has no idea what the heck you are talking about!
When on earth have the Brits become accepting of descriptive grammar? In those days when my friend, Farooq Kperogi, was almost completely apolitical in his writings, "Englishes" used to be among some of his fun write-ups, and peculiar Nigerian expressions were often on his radar. I'm even surprised he is not cited in this essay.
Anyway, to answer your question, Kofi, in my own book, the answer is fundamentally NO, with all capitals intended!
Michael