Bob Corker's office: We never begged Trump for endorsement -- he begged the senator not to retire

President Donald Trump lashed out at Sen. Bob Corker (R-TN) on Sunday morning, saying that the 65-year-old senator made the decision to retire at the end of his term because he was afraid to run without Trump's endorsement.

According to a Sunday report in the Washington Post, that isn't true at all. Rather, Trump called Corker's office to urge the senator not to retire, said Corker's staff.

"Senator Bob Corker 'begged' me to endorse him for re-election in Tennessee. I said 'NO' and he dropped out (said he could not win without my endorsement)," Trump tweeted. "He also wanted to be Secretary of State, I said 'NO THANKS.' He is also largely responsible for the horrendous Iran Deal! Hence, I would fully expect Corker to be a negative voice and stand in the way of our great agenda. Didn't have the guts to run!"

Corker -- who has been public in his disdain for the president's leadership in recent weeks -- responded by implying that the president has become senile and needs constant supervision.

"It's a shame the White House has become an adult day care center," Corker tweeted, the type of facilities typically used for late-life dementia and Alzheimer's patients. "Someone obviously missed their shift this morning."

"When Corker later called Trump to tell him that he had decided to retire — a decision Corker made on his 65th birthday — the president was disappointed," said the Post, citing an unnamed Republican Congressional official.

"So disappointed, in fact, that early last week, the president called Corker to ask him to reconsider his decision, according to Corker’s chief of staff, Todd Womack," wrote the Post's Karoun Demirjian, "and reaffirmed that he would have endorsed Corker had he decided to run again. It was not the first time that Trump had extended such an offer of support, Womack said — directly contradicting every accusation the president tweeted out Sunday morning."