You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Crazy Smart or Over the Edge? Doritos To Bag Locos Tacos Tortilla Chips Line Extension Hits Stores April 8, Gets Marketing Started Via Twitter Contest By E.J. Schultz and Maureen Morrison, Published on March 26, 2013 2 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.