Yocairis Diaz, 18, fatally stabbed her brother, Frank Fortuna, 20, in their Woodhaven, NY, apartment, over an argument about a cell phone, Diaz called 911 and told the operator: ‘If you don’t get here fast, I’m going to kill this guy,’ the New York Post reports. She did kill him and even fled the scene. She was arrested on Saturday and is awaiting arraignment at the Queens Criminal Court on a second-degree murder charge. She killed her brother over a cellphone? Wow. That’s a new low for humanity.