Nobody says, "Sayonara, sucker!" quite like Kelly Clarkson, who said it with gusto in one of pop's greatest kiss-off anthems (and one of her own biggest hits), 2004's "Since U Been Gone." Fast-forward seven years, and America's favorite Idol is still kicking the players, losers and scrubs to the curb with her latest album. The just-released Stronger is packed to the brim with vulnerable confessionals, fierce survival anthems and, yes, more kiss-off classics in the making. Clarkson's in good company: lead single "Mr. Know It All" and the biting "Einstein" ("Dumb plus dumb equals you"? Daaaaaang!) are just the latest in a long line of tunes to tell an ex to hit the road, Jack and maybe remind him (or her) of just what they're missing on their way out the door. So in honor of all those chumps who didn't put a ring on it, we present this playlist of kiss-off anthems.