Late one night Harry and Ron were playing wizard's chess in the Gryffindor common room when Hermione stumbled through the portrait hole. Her hair looked wilder than usual and her robes were rumpled and slightly crooked.

"Hey, 'Mione. Where've you been?" Ron asked as he watched one of his pawns wrestle Harry's last knight off the board.

"Oh, nowhere," she said in a very convincing impression of Luna Lovegood. She floated over to the table where they were playing and sat down in a squishy chair. "Lovely night, isn't it?"

Harry looked out one of the tower windows to see the same Antarctic blizzard that had been raging for the past three days. When he turned back to her, he took in her full appearance. Shoes untied, one sock missing, shirt untucked, tie stuffed into a pocket. "What's on your ear?"

She wiped at it and looked at the offending goo in her hand.

"That," she said with a big grin, "is Snape's greatest potion of all."