Black Friday means atavistic behavior, lost kids, and great web videos of people behaving like throwbacks in big box stores. At Best Buy on Jefferson Davis Highway in Alexandria, Va., Rob Delissio the store’s general manager, has it all figured out. For starters, he will only open the main entrance two feet to avoid mobs. And he has a "code Adam" for when a kid gets lost because the parents have maybe bartered him away for a flat screen TV. More tips at the jump.