I had a Nigerian room mate when I went to school. I had to kick him out within 3 weeks as he screwed somany things. Dont want to give any details here.
Another incident with a Nigerian. One guy from Nigeria tried to scam me when I listed my N91 4GB in craigslist. How do I know that he is from Nigeria? Coz he gave me a Nigerian postal address with a pre-paid FedEX which is also scammed I am not saying all Nigerians are bad. But there are many many such incidents ponting to Nigeria.