Apparently, Nigerians just love to say things with minimal effort as long as it's possible to retain it's meaning. Hence, Nigeria becomes Naija.
- “I'm going” becomes “I dey go”.
- “Don't kill me” becomes “No kee me”.
- “I beg you” becomes “Abeg”.
And many more. That's the basics of the Nigerian Pidgin English, to say as much as you want with as little effort as possible.