GA: Break It

Title: Break It
Fandom: Grey's Anatomy
Characters: Cristina, Mark
Rating: PG for swearing
Warning: SPOILERS to last night's episode.
Summary: Mark wants to sit next to Cristina at Joe's and talk about Meredith and Derek being all lovey-dovey. Not that that isn't completely improbable, but work with me. Cristina is less than amenable to this discussion.

( In which Cristina calls Derek on being a McAss. Seriously. )