Bill Hader Calls Justin Bieber the Worst 'SNL' Host: 'It Was Rough'

Bill Hader has no problem letting the public know Justin Beiber was a difficult guest to work with on Saturday Night Live. In fact, according to Hader's interview with Andy Cohen on Thursday night's episode of Watch What Happens Live, Bieber was easily the worst SNL host of Hader's time on the show.