"Let me get this straight," Severus said, as his robes were pushed roughly off his shoulders to slither to the ground. He shivered as his shirt was shoved violently up and rough fingers traced the curve of his stomach. "When you see me in my new glasses you feel compelled to throw me against a wall and shag me senseless?"
Remus removed his tongue from Severus' navel and looked up. "Yes, that summarises it neatly." His mouth went back to work while his hands moved to fumble with the buttons on Severus' trousers.
"Oh," Severus said; and then, "Oh, gods."