LAS VEGAS – Anderson Silva bobbed, weaved and clowned his way to the first loss of his UFC career. The now-former UFC middleweight champion showed little respect to opponent Chris Weidman, who entered Saturday’s UFC 162 pay-per-view headliner as one of the smallest underdogs of Silva’s long title reign. As a result, MMA’s pound-for-pound kingpin and arguably the greatest fighter in the sport’s history gave away the fight as much as Weidman won it. In front of a stunned crowd at Las Vegas’ MGM Grand Garden Arena, Silva (33-5 MMA, 16-1 UFC) dropped his hands, dared Weidman (10-0 MMA, 6-0 UFC) to take a swing, and laughed off the challenger’s attempts. That was all well and good through the first round, when Silva escaped from an early takedown and heel-hook attempt to get back to his feet and deliver some late-round leg kicks. But like the first round, Silva continued clowning in the second round