ribit,
While I truly do not give a rat's ass what Halperin calls Obama, your description does have the advantage of being more accurate ... because Moochelle hasn't removed that part of his anatomy, yet.
What is instructive in all of this is not Halperin's word choice, but rather the laughably insane response it received from the leftist media. A "dick"? That's it? That's what they are upset about? ROTFLMAO! GWB and Dick Cheney were called every vile name in the book on national television by leftists, but the newly converted, lefty Miss-Manners-wannabes in the lamestream media wouldn't allow their collective panties to twist even a nanometer over any of that, don'tcha know. Wow ... it is simply amazing just how low the mainstream media has sunk down into its own filth in its abject worship of the Marxist Islamophile squatting in The White House. 
B.

The essential American soul is hard, isolate, stoic, and a killer. It has never yet melted. ~ D.H. Lawrence