President Obama admitted Monday that this campaign cycle has gotten to him because of some of the “crazy stuff” Donald Trump and his supporters have said about Hillary Clinton.

“I will tell you,” Obama said at a Clinton rally at the University of Michigan. “Sometimes I get frustrated watching the coverage of this election. There’s a bunch of it that has not been on the level. But I want to tell you something right now, the way campaigns have unfolded, we just start accepting crazy stuff as normal. And people, if they just repeat a text enough, and outright lies over and over again, as long as it’s on Facebook and people can see it, as long as it’s on social media, people start believing it, and it creates this dust cloud of nonsense.”