Joe Biden may no longer be a member of the U.S. government but he’s still trying to effect change. Biden was one of Hillary Clinton’s most persuasive supporters along campaign trail because he sounds like he feels every word he says in his bones.

Biden brought more of that folksy conviction to George Mason University on Wednesday night, where he made sure that the school’s male students will never confuse the difference between rape and consensual sex again.

“Guys. A woman who’s dead drunk cannot consent,” he said. “You are raping her. You are raping her if she cannot say, ‘It’s okay.’”

His words were succinct, powerful, and drew applause from the audience. But Biden wasn’t there for the adulation. He was there to get a point across.

“I really mean this,” he said. “We’ve got to talk about this. Consent requires affirmative consent. And if you’re too drunk to be able to consent, it is not consent.”

Biden’s appearance waa part of an event for the White House’s “It’s on Us” campaign, launched in 2014 to help stop the rape epidemic on college campuses.

“College campuses are communities,” Biden said. “And the place where people’s attitudes are affected, changed, altered, impacted, are within communities.”

Biden eventually aimed his crosshairs at Donald Trump, urging those in attendance not to perpetuate “locker room talk,” a term that’s become synonymous with our current groper in chief.

“You cannot let that kind of talk be bred on the college campus,” he said. “You’ve got to do what I’ve done, what my father taught me. Turn and say, you’re a horse’s tail. Only a little more graphic.”

In 2015, one in five women who attended college in the four years prior, said they survived sexual assault. Find out how you can help stop sexual assault on college campuses here.