Here’s why I love the shit out of this scene. Firstly for the comedy of the collective “BITCH YOU DID NOT.” in the third gif. Also, though, for the way that Sherlock immediately defends Mrs. Hudson despite the fact that he’s not supposed to have those social cues or love anyone enough to use them.
Finally, because of Mycroft’s face in the last gif. He’s obviously shocked; because he KNOWS that it’s out of character for Sherlock to react like that. And then that split second right at the end of the last gif when his face drops. The way he stares at Sherlock before glancing over at John and Mrs. Hudson.
It’s like he realizes that Sherlock is learning these social cues all of the sudden, and he’s learning to love people, like Mrs. Hudson. But in that same split second he realizes that it’s not him that taught him those cues, despite no doubt trying, and it’s not him that Sherlock’s learned to defend (in fact he’s the one Sherlock’s defending from).
In those last split seconds of the gif it’s like you can see his heart break a little bit as he stares at Sherlock and then glances over at the man that managed to do what he wasn’t able to do: giving his little brother a heart. And when he apologizes, you can see the hurt in his eyes after his fake, polite little smile.
And when you watch the scene, he says “apologies” in such a soft voice; a voice a bit unlike his usual confidence.
I’m probably reading WAY to much into this scene but DAMNIT MYCROFT FEELS.
ALSO MARK GATISS FEELS FOR BEING AN AMAZING ACTOR.