"Originally they thought it was a dog, but it wasn't a dog."
My favorite Daily Mail reporter, Daily Mail Reporter—who OWNS the "manufactured newspaper article based on an industry-sponsored-survey" beat—points to an industry-sponsored-survey showing that people really don't like Mondays. There is even a list of "Top 10 'Monday Moans.'" The best one? "You always feel a bit poorly on a Monday," which, you know, truer words, etc.