McDonald's CEO roasted after his tiny first bite of new Big Arch burger goes viral

The CEO of McDonald's posted his review of the chain's new Big Arch burger — but social media ended up taking a bite out of him instead.

The fast-food giant rolled out the Big Arch burger Tuesday, noting it's available for a limited time. The McDonald's website describes the burger as having two quarter-pound patties, three slices of cheddar cheese, lettuce and pickles — plus crispy and slivered onions.

What truly makes the burger stand out, McDonald's says, is its sauce — which is "tangy [and] creamy, with the perfect balance of mustard, pickle and sweet tomato flavors."

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It's "all served on a toasted sesame and poppy seed bun, making each and every big bite equal parts juicy, melty and saucy," the website adds.

CEO Chris Kempczinski posted his video review on Instagram Feb. 3 — and appeared eager to spotlight what he called the chain's "delicious product." 

"Holy cow! God, that is a big burger," Kempczinski said in the video, which garnered over 4.5 million views.

Though he appeared excited, he took a notably small bite of the burger before declaring, "That is so good."

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"It's distinctively McDonald's," he said. 

"Only McDonald's could do this type of burger, but it also is unlike anything else on our menu. It's a delicious product."

Kempczinski's video was lightly roasted in the Instagram comments section.

"He acts like he's never seen a burger before," one person observed. "Impressed by sesame seeds."

"That was the smallest first bite I've ever seen," another person jeered.

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A third user joked that Kempczinski — who was wearing a sweater vest in the clip — has an aura that "screams kale salad."

A handful of users also teased the CEO for referring to the burger as a "product."

"That's a nice-looking product. I'll take two units, please," a commenter jested.

Another top comment read, "It scares me when you call food 'product.'"

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Fox News Digital reached out to McDonald's for comment.

The viral moment follows another headline-making move from the chain earlier this year.

In February, the chain offered free McNugget Caviar kits featuring premium sturgeon caviar and crème fraîche — but ran out before many fans could get a taste.

At the time, McDonald's told Fox News Digital the kits sold out "very quickly, leading some to experience site disruptions."

"We look forward to bringing more ways for fans to enjoy our limited-time drops in the future," a spokesperson said.