As Washington was mired in partisan gridlock thicker than a Beltway summer and the fate of the country’s domestic and foreign credibility tilted closer to oblivion, D.C.’s young "elite" took time to fete the D.C. launch of New York-based. "You have these shows on TV, like ‘Jersey Shore,’ that emphasize the constant sexual thing, and they show hooking up as perfectly normal," said Daniel Garrido, 22, a graduate student. Social…