As if the obesity epidemic needed a stimulus package, Cold Stone Creamery, started selling a 1,920-calorie deposit of chocolate ice cream, milk, and fudge syrup into the bellies of those willing to pay $5.50 or more. To withdraw that from your daily calorie bank, you’d have to spend more than four hours on the step machine or nearly seven hours doing water aerobics.Or most people will need to avoid eating for an entire 24 hours to compensate for such a colorie bomb.