"Hey, Remmie?" Remus didn't even turn to look, eyes trained on the dusty volume, cracked and yellow with age, but merely grunted. "Remmiieee," Sirius whined, tugging on his friend's shirtsleeve, desperate to distract the sixth-year from his book.
"What is it, Padfoot?" Amber eyes glanced over to the Black, distracted, and he wasn't expecting it when Sirius swooped in kissed him soundly.
He wasn't expecting it when a single strand of his hair was plucked out simultaneously. Remus yelped and grabbed at his head, shocked. Sirius only smiled and twirled Remus's first grey hair between his fingers.