It's clear that we can't go 24 hours without Sarah Palin saying something so stupid that it defies logic, but leave it to the Kim Kardashian of politics to find something wrong with first lady Michelle Obama's effort to curb obesity in America's kids.In a radio interview on Wednesday with conservative talker Laura Ingraham, Palin took dead aim at the first lady's "Let's Move" initiative, which is all about getting children active and involved in exercise and healthy eating.