Have you heard of Brett Cohen? You know, Brett Cohen! The actor! No, wait - is he a musician? Who cares?!
Don't worry, you're not supposed to have heard of Brett Cohen, because he's not famous. Well, except he is now - slightly - as a result of the video above.
A few weeks ago, Cohen walked around New York City, trying to fool people into thinking he was famous. And it worked.
Click on the video above to see how he managed not just to create quite a stir, but also make a lot of New Yorkers sound very, very stupid indeed.
A searing indictment of celebrity culture? Or just a silly Sacha Baron Cohen-style prank? Either way, it's rather brilliant - as are these other classic YouTube pranks:
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