Ooohhhh nice! Severus begins to understand. And, luckily, his understanding comes with the urge to bugger Remus. I'm not complaining at all :-)
“What is it, Professor Snape?” Lupin looked up from the parchment he was marking at his fellow professor. Oohhh cold! Even book!Remus calls him Severus all the time. Calling him Professor Snape is harsh and very telling.
“Move... turn around,” Snape ordered, pulling Remus off of him. “As much as I enjoy that, I would much prefer buggering you senseless at the moment.” Ooohhh *love* At first, I was worried Remus would put up a fight and make Snape battle for dominance (and give up because it's too much effort for something he wasn't completely sure about to begin with). So I'm glad Remus knew to give in (and get the children's papers out of the way so his spunk doesn't end up on them. Very considerate, our Remus Lupin).