He strode into the dungeon classroom, settling his cauldron and heading to the supply cupboard. He stepped inside and found Granger, bent over and practically crawling into a lower shelf. Her skirt was hiked up just enough that he could see she was wearing a pair of the knickers she wore in the library. He’d determined that she had charmed her knickers to vibrate; and he thought he’d also figured out the charm she used to turn them on. Clearing his throat, he made his presence known. Granger shot up surprised and smashed her head into the shelf above her. Draco rushed to her side "Fuck Hermione, are you alright?!" Placing his palm over hers on her head, he guided her to her feet, the other hand gripping her waist. She was wincing and rubbing her head when she looked up and realized who had her. 