Chris Christie and the man he's endorsed for president — Republican front-runner Donald Trump — may be good friends. But you wouldn't know it from the jab Trump threw Monday night.

(You also wouldn't know it from the ways the two described each other before Christie dropped out of the race last month.)

As Trump spoke at a rally in an airplane hanger in Vienna, Ohio, he first took a verbal swing at that state's governor, John Kasich — one of just four Republicans left in the presidential primary.

"Your governor is absentee," Trump said of Kasich — referencing the time Kasich spent in New Hampshire ahead of that state's primary, which Trump ultimately took with more than 35 percent of the vote. "Listen to this, 'cause I know, 'cause I was there, but I go back, and I still work. You know, I have a job. You've got to do your job. So, your Governor Kasich — if you look at him, and I'm being totally impartial — he goes to New Hampshire. He's living in New Hampshire. Living!"

"Where’s Chris, is Chris around? Even more than Chris Christie, he was there, right? Even more.”

Christie took frequent criticism back home for his lengthy campaigning in New Hampshire — including immediately before and during the recovery from January's monster snowstorm, which caused massive flooding in parts of South Jersey. It ultimately did him little good, with a sixth-place finish and no delegates won from the state.

"I hated to do that, but I had to make my point," said Trump.

The comments came the same day Christie skipped a New Jersey state trooper's funeral to campaign with Trump.

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