Prince Louis has a lot in common with his late grandmother, Diana, Princess of Wales, when it comes to being a royal prankster! The late princess, whose “wicked sense of humor” was recalled by her former hairdresser Richard Dalton in his new book It’s All About the Hair: My Decade With Diana even went so far as planting “fake vomit and poo” on flights just to laugh as unsuspecting victims discovered the lewd props. “Her jokes were hysterical,” Dalton shared. “She always had plastic vomit or plastic dog poop in her bag to place on people’s seats when we traveled on long flights.” Dalton started…