In a PBS NewsHour interview that aired on Thursday, Joe Biden had some advice for PEOTUS Donald Trump that was perhaps pretty obvious in the big picture. Put simply, Biden told Trump that it was time to "grow up" and "be an adult."

Biden's answer came in response to questions about Trump's tweeting, specifically ones where he referred to Senate Minority Leader Chuck Schumer as "the head clown":

And also this one about the perceived lack of smoothness during transitions between his administration and Obama's:

"Grow up, Donald. Grow up. Time to be an adult," Biden said. "You're president. You've got to do something. Show us what you have. You're going to propose legislation. We're going to get to debate it. Let the public decide. Let them vote in Congress. Let's see what happens. It's going to be much clearer what he's for and against, and what we're for and against, now that it's going to get down to actually discussing in detail these issues that affect people's lives."

On Friday morning Trump demonstrated that he indeed can be mature, by tweeting about how he got better ratings than Arnold did during his debut episode as the head honcho on The Celebrity Apprentice:

Really puts your mind at ease.