We open with a darkened shot of legs and feet, stumbling through a hall. Giggles and falling clothes accompany this scene, and Meredith voice-overs, "When you were a kid, it was Halloween candy." A door opens, and our two headless bodies fall through. One of these is skinny and pasty-white, so we know that it's Mere. Her conquest removes her shirt, and we cut to Burke and Cristina, in just about the same position. MereVO: "You'd get it from your parents, and ate it until you got sick." In between gropes, Cristina pants, "So this is...where you live?" Back to Mere's house, only now it's Izzie and Alex tumbling through the door in the throes of make-out. Mere tells us that, in college, it was the heady combo of youth, tequila, and...well, you know. "As a surgeon, you take as much of the good as you can get, because it doesn't come around nearly as often as it should." And here, we get a hot, hot shot of McDreamy in the shower with...Meredith? Unfortunately, they are both in bed with other people, and Meredith finishes her VO, "Because good things aren't always what they seem. Too much of anything, even love, is not always a good thing" Poor Addison looks over at McDreamy in their bed and tells him, "That was amazing." McDreamy's like, "Uh, yeah." Mere rolls over so her back is facing her partner. He asks if she...? Mere says, unenthusiastically, "Yeah. I did."
Mere is up now, and on the phone with Cristina. She says there's a boy in her bed. Cristina, brushing her teeth at Burke's (probably with his toothbrush, which would probably give him a stroke if he knew), asks where she found him. At Joe's, of course. Cristina spits into Burke's pristine kitchen sink and tells Mere that she's there alone. Mere: "You're not going through his stuff, are you?" Cristina says there's no stuff to go through; you could do surgery in the place. It does seem to be a little on the obsessive-compulsive side of clean. Cristina notices his bookshelves and yells, "OH! He arranged his books using the Dewey Decimal System! Mere, I'm scared." Mere tells her to get out, just as her own boy toy wakes up. She tells him she has to go take a shower, and "when I get back, you won't be here, so...goodbye." Wow, very tactful.
Cristina goes to make coffee in Burke's immaculate kitchen, and finds that he's set out a coffee mug for her. Aw. Inside the coffee mug is a key and a note reading: "'C' -- I had a key made for you. --'B.'" I cannot tell you how adorable I find it that Burke put quotation marks around their initials. He's my grandmother! Cristina, however, finds none of this adorable, and makes an "oh shit" face.