K-Fed's rap rocked the blogosphere (and blew up our server) last week. Even Newsweek's noticed."Go ahead and say whatcha wanna/I'm gonna sell about two mil, fool, then I'm a goner ... I know you all wish you was in my position/'Cause I keep gettin' in situations that you wish you was in, cousin." Mr. Britney Spears, Kevin Federline, in "Y'All ...