Sure, why not? I for one don't need any quantifying evidence to support the argument. I'll be rich soon anyway, I just sent all my details to a Nigerian chap who is going to lodge a gazillion US dollars in my bank account. I'd be surprised if anyone in their right mind would have a problem with this idea. etc
'Fonejacker' on Channel 4 did some funny African scam bank call sketches.
http://uk.youtube.com/watch?v=zPGjeAPrLog
http://uk.youtube.com/watch?v=3AITl10lh2A
http://uk.youtube.com/watch?v=CxcS3IiIPVE