Akbar Gbaja-Biamila On Being a "Diaper Ninja" + Mom Addicted To Phone Goes 2 Days Without It

Two viewers are going head-to-head in the ultimate burger showdown! Then, makeup artist Mally Roncal who's hooked to her phone goes 48 hours without it. And why does "American Ninja Warrior" host Akbar Gbaja-Biamila call himself a "diaper ninja" … ?! Plus, Rach hits the kitchen with Chorizo Skillet Nachos!