Luna reached up to wrap a hand around the back of Merlin's neck, drawing him back to her lips. "You could ignore it," she whispered before kissing him again. "Fuck me instead." But the knocking was accompanied by yelling so that didn't seem very likely. So instead of refusing to let him go, Luna sighed and let him go, knowing she was probably on the end of a losing battle here.
She smiled up at the annoyed wizard looming over her. "Don't worry. I'll keep myself entertained." She slid her finger down past the waistband of her lilac panties for his visual imaginings. "But I'll miss you."