Nate Robinson, the 5-foot-9 phenom on the Knicks, was having so much fun at club Pink two nights after scoring 41 points to beat the Atlanta Hawks that he decided to take his shirt off. Security had to tell him to put it back on, our source reports. Also at Pink that night: Robinson’s teammates Al Harrington and Larry Hughes, plus Jets stars Darrelle Revis, Kerry Rhodes, Thomas Jones and Braylon Edwards.