This is another great gag from Jimmy Fallon, along the same lines as the Matt Harvey prank Fallon pulled on Mets fans. The setup here is pretty simple. A producer gets Yankees fans on the street to boo a large picture of Robinson Cano and after they boo and turn back to the camera, the producer tells them to give it one more try. When they turn back around, the actual Robinson Cano is standing there. It's great.
The reactions to Cano are priceless—"listen, about that, right, here's what happened"—but some of the booing is pretty funny as well. Try to wrap your head around a Yankees fan criticizing Cano with words like "But he did leave for the money."