Justin's surgery. He's still complaining that he doesn't want the stupid new heart, so why are they doing this? Cristina says it's because he needs it, and until he's eighteen, his mother calls all the shots. Justin: "My mother's a liar. You heard her. She said the heart came from Santa Claus. She shouldn't get to decide anything." Cristina tells him he could make a run for it, but the heart he has won't get him very far. Burke asks Justin if he's ready. Justin asks Burke to give this heart to some other kid if he dies in surgery. Burke tells Justin that's not gonna happen -- not on his watch. Please excuse me while I go into HOTTIAC ARREST. They put Justin under, and we fade into the next scene.

Tim's two adorable little girls are sitting on his bed, adorably retelling a Christmas story. Izzie and McDreamy walk in, and McDreamy asks if they could talk more privately. Tim's wife, who is just as overly into her kids as Tim, says just to tell them now, and asks if it's bad. McDreamy says Tim's fall caused a subdural hematoma. One of Tim's girls: "I don't even know what that means!" McDreamy says it means their dad's...well, his brain is bleeding. Little girl: "GREAT." Hee. McDreamy is not nearly as amused, and turns to Tim and his wife to say that they need to operate quickly, before the bleeding gets worse. The boy child says they don't need an operation. Tim says he thinks they do, as Izzie and McDreamy exchange "Weirdos!" looks. Tim's wife tells the kids that it's all going to be fine, because they have a doctor named "Shepherd," isn't that wonderful, and a total sign from God? Wow, they really are weirdos.

Back in Justin's surgery, Burke has replaced the heart. He says it's a beautiful fit, and all they need to do now is figure out why Justin is so angry. Cristina says if she had his mother she'd be angry, too. Burke says his mother isn't the problem; she loves him, and never leaves. Cristina says she also never listens. Burke just hopes Justin changes his mind before it's too late: with all medical realities being equal, why does one patient live, and another die? "I believe there's a mind-body-spirit connection. And if Justin really doesn't want this heart, his body will reject it." Cristina doesn't understand this crazy non-scientific talk, and says, "So, let me get this straight. You not only celebrate Christmas...you actually believe in Santa Claus?" Oh, shit. Burke has finally had enough of Cristina's grinchiness, and tells her to go schedule a psychiatric consult for Justin. Cristina: "But we're not done here." Burke: "YOU are." Hooray! Smackdown! Thank Santa. The other people in the room all stand there uncomfortably as Cristina leaves in a huff. See ya, Crissy! Commercials.