Though few people knew it, there was little Severus liked more than a soft snow. It helped him think. Made him feel calmer. While students were there, he only dared to indulge just inside the Forbidden Forest. During Christmas, however, he was able to freely walk amongst the falling flakes. The subtle crunch as he crossed the white land was comforting to his ears. To anyone who cared to look, it appeared Severus was just brooding. If someone had read his mind, it would be obvious that he was contemplating a certain loud argument with a certain annoying transfiguration teacher.
...
"You insufferable bastard, I was only asking a simple favor!"
"If you use any part of my lab, strands of hair will be everywhere."
"What a pathetic excuse! I could easily keep my hair in place. You simply refuse to be amiable to anyone. God forbid you show some slight humanity."
"God forbid you show some maturity. Really, Professor Granger, couldn't this have been done privately and at a lower decibel. I hardly think a public shouting match is necessary. Now if you will excuse me, I must leave. Maybe we can have another discussion when you decide to grow up."