Former staffers to Jeb Bush’s suspended presidential campaign on Friday tore into Chris Christie for endorsing GOP presidential front-runner Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

Former Bush communications director Tim Miller called Christie “pathetic” and suggested he bonded with Trump over a “big meal,” an apparent reference to Christie's weight.

Like Trump, Chris Christie is a pathetic, corrupt man with a tiny ego. I'm sure they bonded discussing their insecurities over a big meal. — Tim Miller (@Timodc) February 26, 2016

And former chief strategist David Kochel compared the endorsement to a “fat kid” surrendering his lunch money to a “bully.”

New lesson kids: sometimes, the best option for the fat kid is to just hand his lunch money over to the bully! #TrumpChristie2016 — David Kochel (@ddkochel) February 26, 2016

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Christie said at his endorsement on Friday that Trump is the only candidate in the GOP primary field prepared to be president.

“I’ve been on that stage. I’ve gotten to know all the people on that stage,” he said. “And there is no one better prepared to provide America with the strong leadership that it needs both at home and around the world than Donald Trump.”