Naiguma
You become a naiguma when you get dragged into Nigeria and start acting like you were born there, even though your accent is still stuck in your hometown.
My cousin turned into a full-blown naiguma after he started calling his mom 'mummy' like it was a brand.
I got called a naiguma for using 'na' instead of 'no' in a sentence.
My friend’s naiguma phase started when he tried to talk like a Lagos guy and failed.