"the combination of his own frozen-from-shock state and Snape's natural stiffness made it more of an off-target head-butt than anything else." - excellent start to a seduction, I must say! Luckily everything proceeds much more smoothly from there - I love both Snape's and Malfoy's arrogance, and Harry's general cluelessness. This is meant to be a punishment, indeed! What a lovely story to wake up to.