The big arch effect: How a joke sparked a worldwide fast-food marketing battle

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TL;DR:

A viral parody by an Irish comedian mocked McDonald’s CEO’s awkward Big Arch taste-test video, sparking a global “burger war” online. Competitors joined the joke, turning a simple product launch into billions of impressions and millions in earned media — showing how internet culture can amplify brand marketing far beyond paid campaigns.

Article:

McDonald’s launch of its new Big Arch burger unexpectedly escalated into a global social media “burger war” after an Irish comedian mocked a viral taste-test video posted by the company’s CEO — triggering a wave of responses from competitors and consumers worldwide.

The episode began when McDonald’s CEO Chris Kempczinski posted a promotional video sampling the Big Arch ahead of its U.S. debut in March. In the clip, he cautiously took a small bite and referred to the burger as “the product,” a moment that quickly drew ridicule online. Memes spread across TikTok, Instagram, and X, with viewers questioning whether the CEO even enjoyed the food he was promoting.

Then an Irish comedian amplified the moment with a parody that reframed the viral clip as part of a tongue-in-cheek “burger war.” The satire extended the life of the story and helped push it beyond marketing circles into mainstream internet culture.

Competitors quickly joined the conversation. Burger King released a playful counter-video featuring its U.S. and Canada president enthusiastically biting into a Whopper — an intentional contrast to McDonald’s more restrained corporate delivery.

The attention translated into massive reach. According to media analysis, the viral moment generated about 5.8 billion online impressions and roughly 48,000 mentions in a single day, making it one of McDonald’s most visible marketing moments this year.

For marketers, the episode illustrates how brand narratives can be shaped by cultural participation rather than traditional advertising budgets. As one industry observer noted, the awkward taste-test “achieved its marketing goal: it got people talking — and eating.”

The publicity has tangible value as well. Analysts estimate the viral buzz surrounding the Big Arch could generate over $18 million in earned media value for McDonald’s — without additional paid promotion.

The takeaway for brands is clear: in the algorithm-driven attention economy, cultural timing often matters more than carefully scripted campaigns. What began as a routine product launch evolved into a global marketing spectacle — because someone outside the brand turned it into entertainment.