If you’re confused about what to get Paul Krugman for Valentine’s Day, it’s not like he hasn’t dropped enough hints. He likes spending. Gobs of it. In fact, he thinks President Barack Obama is far too miserly with the public dime. Since Obama was elected in 2008, Krugman, a Nobel Prize-winning economist, has called for an increase in U.S. government spending 133 times in his New York Times column.