You can mock Nigerian girls all you want for lacking communication skills, but the truth is that Nigerian society is generally hostile to honest conversation.
The more Nigerians you deal with, the more you notice a pattern: people avoid saying things directly. They deflect, suppress, and sidestep difficult discussions until, seemingly out of nowhere, there's an emotional outburst.
Many of our siblings, parents, lecturers, bosses, and peers exhibit this trait to varying degrees: avoid, deflect, avoid—then suddenly, get mad.