PHOENIX—Mere weeks after saying "Mama" and "Dada" for the first time, 17-month-old Max Ellis has expanded his vocabulary to include the registered trademarks Tinky Winky™, Fruit Roll-Up™, Nintendo™, Blue's Clues™, Superman™, and Pepsi™. "I think I even heard him say 'McDonald's™' yesterday," mother Darlene Ellis said. "He's growing up so fast."