Vinegar and oil, soda and pop rocks, Burger King and McDonald’s: those are just a few things that don’t quite mix well together. Well, except that last one, apparently, as The King is calling on the Golden Arches to set their differences aside and give consumers what they want: something called a McWhopper. But it appears this unholy alliance won’t see the light of day, as McDonald’s just isn’t felling the love for its archrival. [More]