Shanghai was taken by storm recently by tennis legend Roger Federer, who walked the streets, interacted with fans, and signed autographs.
Except it wasn't Roger Federer. It was just some guy named Donnie.
For research, kind of, Donnie wanted to see if people from China thought that he looked like every other white person. So he dressed up like Federer and walked around Shanghai, flanked by fake bodyguards.
And it worked, for the most part, though the dude at 2:40 doesn't really seem to be buying it.