Random favorite moment

In season 9 episode 23 (I think it’s part one of the season finale with the whole storm) when Derek and Brooks are operating on the guy who has a son Owen wants to adopt (which is weird as fuck by the way) and Derek has to leave because Meredith falls down the stairs. Derek is like what do I do and Brooks goes I can finish just go and she explains how to finish so that Derek can leave and Christina is looking through the window sees Derek leaving and freaks out. She goes “No Mousey. Mousey no“ as she knocks on the window like crazy and I swear to god it is one of the funniest moments of all time. This along with Christina’s facial expressions during the Matthew proposal is the best thing the whole season. No one is better than Christina!!