Well, it might have taken her a while to think of the appropriate comeback, but that's one of the many reasons why the internet is so much better than real life: You can take your time and compose the perfect drop-the-mic rejoinder without worrying that your feuding partner has long since walked away. After pop star Rihanna and legendary comedienne Joan Rivers had a little back-and-forth yesterday on the topic of Rihanna's statements about Chris Brown during her recent Oprah interview—leading to Rivers tweeting that it was "MY turn to slap her"—Ri deaded the feud yesterday with the following:

Trump card. Sorry, Joan—it might be a little too easy, but then again, you were never really above the cheap shots yourself. Time to move on to mocking Avril for her poor taste in Canadian rock dudes.