Vice President Biden appeared on The Late Show Tuesday night, and offered a little more clarity on a possible presidential run in 2020.

As it turns out, the former Delaware senator and Scranton native has no plans to run, though he hasn't ruled anything out completely.

"I can't see the circumstance in which I'd run, but what I learned a long time ago, Stephen, is to never say never. You don't know what's going to happen," Biden told Colbert in his first talk-show appearance since the election. "I have no plans, but I'm going to stay deeply, deeply involved."

The departing vice president previously told reporters that he was "going to run in 2020. For president. So, uh, what the hell, man." Biden later added that "I'm not committing to anything," but "fate has a strange way of intervening."

On the show, Biden also addressed his decision not to run for president this year, saying that while the election results disappointed him, his decision to pass on a run was the right one. Biden ruled out a 2016 run in October 2015, several months after the death of his 46-year-old son, Beau.

"Do I think I was best prepared at that moment to lead the country? I did, because I thought the issues that were of greatest concern were in my wheelhouse, thing I've dealt with my whole career," Biden said Tuesday. "So in that sense, I'm disappointed I'm not going to be in a position to make those decisions. But I don't regret the actual decision."

Should Biden decided to run in 2020, though, he says he will have at least one thing over President-elect Donald Trump.

"Donald Trump's going to be 74," he said. "I'll be 77, in better shape."

Colbert and Biden have a historically good rapport. When Colbert's tenure at The Late Show first began, Biden gave a tearful interview about how Beau's death had affected him. It was a raw moment of honesty between the vice president and the often ironic late night host.