Saturday Night Live has had some major superstars hosting and performing throughout its history. Fans often want to know who was among the poorly-behaved stars. Appearing on Watch What Happens Live Thursday night, SNL alumni Bill Hader and Jay Pharaoh fielded the question, called in by a viewer. They agreed that Justin Bieber was the worst one from their time on the NBC show. “Bieber, he was just in a bad place,” Hader said. “Maybe he’s in a better place, but then … it was rough.”