With our focus on anticipatory guidance, we pediatricians are called on by our professional societies as well as First Lady Michelle Obama's Let's Move! campaign to monitor weight trends and counsel appropriately at younger and younger ages. However, our medical assessment of weight status and health impact can conflict with parents' (and even our own) perceptions of healthy weight; for we all live in a world where the obesity trend has skyrocketed faster than our cultural values and perceptions can change.