OK, it's an ad but still a clever concept.
Counter Counterfeit Commission
"At the CCC, we're dedicated to putting an end to the victimization associated with purchasing a counterfeit MINI Cooper. We cooperate with MINI and international law enforcement to pursue criminals. But there's one other crucial partner we need to recruit: YOU. We can't do this without YOU. Educate yourself about the problem. Learn how to detect a fake. Know when you're being hoodwinked. Together, we can put an end to this appalling injustice. Together, we can make our streets genuine once again."
Also spotted on my streets:
"TRUST US... SHE DOESN'T WANT PAJAMAS"
(billboard for a diamond store)