The Atlantic writes, Simply pairing stock criticisms of Obama with dance moves doesn't constitute a joke. This video by the conservative pundit Michelle Malkin is making the rounds, as they say. Why is unclear -- if you can explain what's funny about it, I'd love to hear. First, the background: Malkin's video is a parody of a bit that Jimmy Fallon and First Lady Michelle Obama made last week, called "The Evolution of Mom Dancing." To be honest, it's not that funny either. The premise is that moms tend to dance in a less-than-hip fashion; the gag is that the "dance moves" are a pairing of outdated motions -- "Raise…