A 19-year-old Kentucky girl mysteriously vanished while partying in a bikini on a boat at a local lake, triggering a massive land and water search, according to reports. Marly Kinney was partying on a pontoon boat with at least 10 friends on Grayson Lake in Carter County Wednesday afternoon when she went overboard to use the bathroom, with the group not initially realizing she was missing, the US Sun reported. Authorities said the bikini-clad teen was last seen around 4 p.m. Wednesday, with her