Riku had to laugh at Sora too, he was just too funny, and once Sora's mom left, he grabbed Sora and pushed him back down onto the bed, rolling ontop of him.
"Why does your Mom get to tell me to do homework?" he asked, taking out any annoyance on Sora's neck. Mmm, Sora. "Do you really think she'd come back and check on us?"