Regulus watched Sirius reach up to the counter, standing on tiptoes, and searching blindly for the plate he knew to be there.
"Sirius, we're not allowed," he whispered loudly, pulling on the hem of his shirt. "Mama will be mad."
"She won't be able to tell." Sirius turned to glare at Regulus then. "And you won't tell her."
"I won't," Regulus promised. Sirius turned back to the counter, reaching for the plate one more time.
"Good," Sirius said, dropping to his knees and joining Regulus under the kitchen table. He handed Regulus two of the three cookies he'd stolen. "Don't drop any crumbs, or Kreacher'll tell."