Somewhere, Kevin Federline is laughing. An out-of-shape, out-of-touch Britney Spears delivered what was destined to be the most talked-about performance of the MTV Video Music Awards – but for all the wrong reasons. Kicking off the show Sunday night in Las Vegas with her new single, “Gimme More,” Spears looked bleary and unprepared – much like her recent tabloid exploits on the streets of Los Angeles. She lazily walked through her dance moves with little enthusiasm. It appeared she had forgotten the entire art of lip-synching; and, perhaps most unforgivable given her once taut frame, she looked embarrassingly out of shape. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Even the celebrity-studded audience seemed bewildered. 50 Cent looked at Spears with a confused expression; Diddy, her new best friend, was expressionless. Some comeback.