ALBAWABA - McDonald's recently caused a stir when its CEO, Chris Kempczinski, took to social media to promote the fast food chain's new Big Arch Burger. However, Kempczinski raised eyebrows when he referred to the burger as a "product" and reluctantly took a bite of it, adding that he would save the new burger for later. In response, the historical fast-food feud between McDonald's and Burger King erupted again when ...