Prompt was dark chocolate.
Harry greeted Severus with a long kiss upon his arrival in their shared rooms.
"Mmm..." Severus hummed approvingly after the kiss. "I do love it when you plunder my secret stash of dark chocolate."
Harry snorted. "It's hardly a secret stash, Severus."
"Only you know of it. And I know you haven't told anyone, or else you'd –" Severus froze at the look on Harry's face. "You haven't – you didn't –"
Harry attempted to look innocent. "Didn't what?" Finally he collapsed onto the couch, laughter shaking his skinny frame. "No, no – I didn't."
Severus frowned irritably. "Well. No more chocolate for you."