Magic of the Mind (гет)

Summary: As close to the original prompt as my muse would allow.
Original Prompt: Severus steps back into the Potions classroom when the resident master leaves in the middle of term; unfortunately, this means that he's teaching one or more of the Widow Weasley's children, and she has a way of over-involving herself in their education. Severus finds a creative way in which to distract her from interfering in his curriculum. Bonus points for students catching Severus and Hermione in *coughs* an intimate state. (No Ron-bashing.)