Yeah, well, you're an arsehole who only cares about one person. And you remind him of the Nazi's that tortured him. Congratulations.

[John rises and moves over to where Mycroft is, looming far more than a man who's all of 5'6" should be capable of.]

If you try to talk to him about anything like that again, I will stop you, Mycroft. And I will hurt you. Which you're gonna prefer over him snapping your neck like a pencil.