Mysterious monoliths are having a moment. Last month, two officers assisting Utah's Division of Wildlife Resources discovered a roughly 12 foot monolith in the desert that subsequently vanished a few days later. Then, on the heels of the Utah monolith discovery, another monolith structure was discovered in Romania. It, too vanished mysteriously prompting plenty of speculation about the structures as well as a bit of fun jokes as well. Now, McDonald's monolith tweet has gone viral, prompting some hilarious responses from both fans of the fast food chain and other brands as well.