OMG, look at what I almost missed by not being around! This is wonderful and hot and I love everything about it. Snape's expression and pose, the whole idea of this. His right knee. The swirl of magic around his nicely flushed cock and the bits of come flying in the air - clearly a successful spell. ;) The mess on the desk behind him. And god, HIS RIGHT HAND. THOSE ARE SOME VERY SEXY FINGERS. Also, the way his narrow sleeves flare out around his hands. Yes, I love this kind of details. ;)