MEREDITH: "Hey, why aren't you busy prepping for rounds and stealing all the good cases?" CRISTINA: "Why aren't you busy prepping for rounds and stealing all the good cases?" MEREDITH: "No reason." CRISTINA: "No reason." [pause] "Burke thinks I moved in with him." MEREDITH: "McDreamy and I have a case. Wait. He thinks you moved in with him?" CRISTINA: "You're calling him McDreamy again?" MEREDITH: "So?" CRISTINA: "What are you doing?" MEREDITH: "What are YOU doing?"