Donald Trump dealt Chris Christie a devastating blow on Thursday night when he informed the New Jersey governor that he could no longer eat Oreos.

Appearing as the guest of honor at a fundraiser in support of Christie, Trump told the crowd during his speech that he would be boycotting Nabisco after the company made the decision to move parts of their operation from the Garden State to Mexico.

That is when he smiled and pointed to Christie, saying: 'I'm not eating Oreos anymore. Neither is Chris. You're not eating Oreos, are you? No more Oreos for either of us, Chris. Don't feel bad.'

Christie, who underwent lap band surgery in February 2013, was not on stage at the time so it is unclear how he reacted to The Donald's proclamation.

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Best buds: Donald Trump was the guest of honor at a fundraiser for Chris Christie in New Jersey on Thursday night (above)

Shock: Trump spoke to the crowd about Nabisco moving jobs to Mexico and said that he was boycotting their products. He then looked over at Christie and informed him that he could no longer eat Oreos

Christie's love of candy is well documented, with the governor having no problem tucking into a pint of ice cream while appearing on Jimmy Fallon or enjoying a jelly doughnut with David Letterman.

He also sparked confusion this past March when he was captured opening a bag of M&Ms and pouring them into a large M&Ms box.

Christie eventually explained what was happening in the photos during a radio interview, saying that the bag came inside the box and he dumped them out because the box was easier for him to hold.

'You get the box. You open the box. There’s a bag inside the box. Why they do it that way I have no idea, but you open up the bag, you pour the bag into the box, so it’s easier to hold,' said Christie while appearing on Craig Carton and Boomer Esiason's talk-radio show.

When the two hosts asked Christie why the company did this, he replied; 'I run New Jersey, not M&M-Mars.'

Trump's appearance at Christie's $200-per-head fundraiser helped to attract approximately 1,000 people on Thursday, allowing the governor to pay off almost all of his campaign debt from his failed primary run.

He also took some time to speak about some of the great things that Christie has done for the state and praise him for shutting down Senator Marco Rubio during a primary debate, commenting that he looked like 'Perry Mason.'

The event was held at the National Guard Armory in Lawrenceville, New Jersey.

Eat up: Christie, who had lap band surgery in 2013, has spoken about his love of sweets many times in the past (eating ice cream on Fallon in April 2015)

Trump and Christie have become bosom buddies over the past few months after Christie shocked many by becoming the first prominent Republican to endorse Trump for president in February.

Even more shocking was the fact that the endorsement came after months of attacks waged against one another by both sides during the primary.

Christie has now become a key part of Trump's team, especially with the announcement earlier this month that he would serve as part of his White House transition team should he win the presidency come November.