apparently "your mom" jokes are not so funny in Afghanistan...
Saw this first in the Wall Street Journal... their story closed with the amusing anecdote:
"But the origins of the number don't matter much to drivers like Ghafar, who has to deal with daily ridicule that has cost him at least one friendship.
"A classmate of mine was always joking with me and saying I was a pimp," said Ghafar, who rebuffed repeated requests to have his photograph taken with his troublesome license pate. "I said, 'If I'm a pimp then bring your sister and mother around.' We're not friends anymore.""