M&M/Mars shows how the fruit juice in Starburst can jumpstart kids' brains in a spot called "If" that ponders questions such as, "If aliens are of a higher intelligence, why do they abduct the dumbest people?" The spot is the second in the "Eye candy" campaign to "Get your juices flowing." A print ad is expected to break later this winter. Grey Worldwide, New York, handles. Art director: Brian Lefkowitz; Copywriter: Sean Burns.