Britney Spears by Jamie McCarthy/WireImage.com Britney Spears by Jamie McCarthy/WireImage.com

Though Kevin Federline's attorney lobbied for Britney Spears to be stripped of all visitation rights after she ignored eight out of 14 recent phone calls summoning her for mandatory drug testing, the judge in the former couple's custody case is giving the pop tart one last chance to make good on her court-ordered obligation. Going forward, the judge on Thursday said, "There needs to be one number that the testing facility calls that she responds to."

According to TMZ, Spears' lawyer had argued that his client was merely sleeping at the time of the missed calls, saying to the judge, "You are not a pop star with a No. 1 album, so you don't know [how hard it is]."

Yeah, taunt the guy in the robe. Excellent strategy.