Vice President Biden had a simple response when asked on "The View" Friday if President-elect Donald TrumpDonald John TrumpDems win from coast to coast Falwell after Gillespie loss: 'DC should annex' Northern Virginia Dems see gains in Virginia's House of Delegates MORE "understood the gravity" of his late-night tweets.

“It’s not healthy,” Biden said.

During the interview, Biden said he has had to reassure foreign leaders who are nervous about some of Trump's comments. He described getting a phone call from the president of Latvia, who was concerned after Trump suggested he might not defend NATO allies against Russia. 

"I'm hoping that a lot of what Mr. Trump has said has been rhetorical so far," Biden said. "And that he sits behind that chair — he's a smart guy — and that he in fact begins to understand the gravity of and the consequences of words, not just actions, but of words.”

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The vice president was a vocal critic of the president-elect’s social media habits during throughout the election.

After Trump sent out his infamous string of 3 a.m. tweets to blast former Miss Universe Alicia Machado, Biden mocked him.

"What type of leader awakens at 3 o'clock in the morning?" Biden asked during one of his campaign stops for Hillary ClintonHillary Diane Rodham ClintonGOP rushes to cut ties to Moore Papadopoulos was in regular contact with Stephen Miller, helped edit Trump speech: report Bannon jokes Clinton got her ‘ass kicked’ in 2016 election MORE. "I'm being deadly earnest. You don't have to be a psychologist or psychiatrist, but what kind of leader awakens at 3 o'clock in the morning and tweets Hillary helped 'disgusting Alicia M. become a U.S. citizen so she could use her in a debate’?"

But the president-elect has defended his practice of using Twitter.

"It’s a modern form of communication. There should be nothing we should be ashamed of,” Trump once said to describe his use of Twitter.

Trump’s incoming White House press secretary has also said that Trump’s tweets determine the day’s news cycle.

"Whatever he tweets, he is going to drive the news," Sean Spicer said during a panel at the University of Chicago last week.