Kevin Federline has reportedly filed for primary 'physical' custody of Britney Spears' kids. People reports that papers were filed yesterday by Federline's lawyer. If I were Kevin Federline and wanted to prove that Britney was an unfit mother to Sean Preston and Jayden James I'd probably hire me up a slick P.I. to dig up some photos. Stuff like Britney topless in swimming pools with strangers. Or doing crazy stuff like attacking cars with umbrellas. Or Britney driving around with her kid on her lap. You know, bad stuff like that. Man, that'd be a lock. If he could just find someone sleazy enough to get all those photos. Hmm.