Watch: #JimmyFallon Leads Drunken ‘Grease’ Sing-Along In NYC Bar

Jimmy Fallon got drunk and started singing “Summer Nights”, from the movie "Grease", with a room full of hammered backup singers at Marie's Crisis Café in NYC over the weekend. They were all so wasted that they couldn't get the lyrics right and sang off beat but it looks like they all had a blast. TMZ got the entire action on video. Watch below.