(Derek runs up to Bailey and Meredith in the hall) 

Derek: How goes out special super secret silent sunset surgery ? I've been practicing that. 

Bailey:You have too much time on your hands. Uh, tell the chief I'll be there. Just let me know when and where. I'm in. 

Meredith: Ok. are you nervous? 

Derek: It's a complicated surgery.  I make one mistake, I end a fellow surgeon's career, my mentor's career. Oh, no, I'm not nervous. 

Meredith: So just for the record... 

Derek: Mm-hmm. 

Meredith:You'd tell me if I need to get tested, right? 

Derek: You think I have syphilis? 

Meredith: No, I don't. It's just...we never made any rules or anything. I mean, we never said, "We have rules," and  I wouldn't hold it against you. 

Derek:  When would I have time to go out and get syphilis? You're a handful enough as it is, and besides, we're like, practically a condom ad. 

Meredith: But no more glow-in-the-dark ones. 

Derek: You see? There's nothing to worry about. Maybe we should, you know make some rules, I mean. 

Meredith: We should. 

Derek: Ok. 

Meredith: Ok. 

Derek: Just for the record... 

Meredith: Uh-huh? 

Derek: I like the glow-in-the-dark ones. 

Meredith: I bet you do.