Art duo SERF & MINT and Pablo Powers spotted a NPA worker gleefully ripping down the artwork they installed for the New York Street Advertising Takeover yesterday in Little Italy and decided to embrace the wheatpasting vandal. How? By snapping a photo of him, adding a “Buff Bum” caption, printing it up at Kinko’s and then reinstalling it back on the billboard, after clearing out the newly pasted ads of course. As MINT jokingly notes, “it’s beef.”