Revenge can be sweet, but it's only too bad Henry, 4, and 7-year-old twins Hazel and Phinnaeus weren't there to see it in person! On today's episode of The Ellen DeGeneres Show, Julia Roberts  tells the host that she enjoys pranking her three kids, surprising them when they are coming around the corner. She says, "Really, little people can just catch air. They just vault." It seems their mama does, too, because Ellen DeGeneres scared the Mirror Mirror  star twice during the taping, and both times Julia jumps right off the ground. Check it out and tell us — do you ever take a lil pleasure from scaring your kids?