McDonald's CEO Chris Kempczinski found himself at the center of a social media spectacle when a promotional video showed him taking a surprisingly small bite of the new Big Arch burger. The footage, meant to showcase the product, instead drew mockery online for Kempczinski's tentative chomping style.

Critics and competitors pounced on the moment, with Burger King's account quipping 'we couldn't finish it either' and Wendy's suggesting there was 'lots to unpack here.' Even Jack in the Box weighed in, advising the CEO to 'eat your product.' The fast food giants' playful jabs revived memories of classic corporate rivalries from the 1980s, when brands like Coke and Pepsi engaged in high-stakes marketing battles.

McDonald's seemed unfazed by the attention, reporting that early Big Arch sales were 'beating expectations.' The company even joined the fun by posting a picture of the burger with the caption 'Take a bite of our new product.' While the viral moment cost little compared to traditional TV ad campaigns, it demonstrated how quickly social media can turn a promotional effort into a competitive spectacle.