You know how suspicious Nigerians are.
One day a man was asking this man from Nigeria some questions about Nigeria. Whatever he asked the Nigerian was being answered with another question as the Nigerian was suspicious of the man asking him these numerous questions.
Finally, the man gave up and asked the Nigerian his final question hoping to get an answer. Is it true that you Nigerians are always very suspicious and always answer a question with question?
The Nigerian replied, "who told you that?