"There is a party tonight in the dungeons. It is not all a Slytherin problem, however, I do not know my way around down there and I have no wishto try to handle a group of drunken students by myself. You are intimidating," her eyes narrowed at the sudden light in his eyes,"to students and I am asking for your assistance."
Snape never checked to see if Hermione followed. He led the way quickly with long strides that sent his robes billowing. Not for the first time, Hermione wondered if they were enchanted to do so.

Honestly, was it really necessary to make sure the entire castle heard the refrain to that infernal carol?  Merry Hippogriffs indeed.  Honestly, Severus didn’t really mind Christmas itself all that much, it was just the loud singing and carrying on.  And he may have possibly been worse around Hermione on purpose, but he would never admit to it.