Cristina confronts Burke about her key. She holds it up in his face and asks, "Why?" Burke responds, "Why is it a key? Are we feeling existential this morning?" Aw, so nerdy. Cristina rolls her eyes. "Well, if a key turns in a lock and nobody asked for the key, or even wanted the key, does it make a sound?" Before he can answer, Mere interrupts, so Burke says he's going to take this opportunity to be someplace else.

Mere is freaking out. She tells Cris that Running Guy's labs came back clean, and so now someone needs to induce vasoconstriction. Cristina: "Oh, nice try with the fancy words. He needs an enema." Mere says she can't do it. Cristina says she ain't doing it. Mere promises to do all her enemas for a month if she'll just do this one. Cristina: "Wow, you really don't want to do this." Meredith looks absolutely unglued. It's awesome.

Annoying Pituitary Cyst Man's room. He yaps. I refuse to recap it. McDreamy tells him that he needs surgery to remove his cyst, which is congenital, and then he will be all better. APCM orders a milquetoast-looking guy sitting in the corner to look McDreamy up and check his credentials. Lord. Alex tells APCM that they need to stabilize his sodium levels first, which means no more water. APCM: "But I'm thirsty!" Alex says they'll hydrate him intravenously. The assistant goes to remove the water from the table. APCM: "What the hell do you think you're doing?" Assistant says it's the doctor's orders. APCM looks just as annoyed as I am right now.

Oh my God, they're playing the Lotion and the Basket song. If you haven't seen the video, please, I beg you to go watch it. As this little piece of musical brilliance plays, Running Guy tells Cristina he can't believe this is happening. Cristina acts entirely unsympathetic as she gives him the enema.