McDonald's CEO, Chris Kempczinski, has blamed his mother's advice for his awkward taste test of the chain's Big Arch burger. The video, which went viral after it was posted online, was ridiculed for appearing to look like a vegetarian trying meat for the first time. Some viewers suggested that the burger was unique due to its ingredients, which include two quarter-pound patties, three slices of cheese and crispy onions. However, the CEO attributed his awkward reaction to his mom's advice. The viral video sparked responses from other fast food brands, including Burger King.