Banned by Luvscharlie
Hermione entered the room in the plain flannel nightdress Ron hated.
"Why do you insist on wearing that hideous thing?" he asked.
"Because it's freezing; this keeps me warm."
With a deftness born from hours of Auror training, Ron pulled the nightdress over her head in a blur of motion and tossed it into the fireplace.
"Ron!"
"Flannel is hereby banned in this flat," he said in a matter-of-fact tone. "I'll keep you warm. Now that we've established that, come here and let me do my job."
She might have protested had his lips not been doing such splendid things.
A/N: The challenge of this drabble was that it must be exactly 100 words and centered around the prompt cold.