The checkout-lane tantrums. The candy-aisle bribes. The 2-year-old who wails and writhes in the grocery cart seat. For many parents, supermarket shopping with a toddler in tow can be stressful (to put it mildly). But with these tips from Dr. Michele Borba, iVillage’s parenting expert and the author of The Big Book of Parenting Solutions: 101 Answers to Your Everyday Challenges and Wildest Worries, you can make it out of the store with a happy kid, a checked-off grocery list and your sanity intact.