Half of Sirius just wanted to laze about on James. But he knew that he couldn't let such an injustice stand, because he didn't want James to think that his threats were idle. Because they sure were. He rolled over the rest of the way, straddling James' middle so that he could grab at his wrists and pin him down to the ground. He knew that they were risking waking a lot of people up -- who would be real pissed at them and wouldn't be afraid to show it -- but it had been too long since he and James had wrestled, so he went for it. And then he grinned down at James.
"Well a little me would be fucking adorable," Sirius answered readily with a nod. "A little you is perfectly acceptable, even if you're a sugar-high little bint." He knew that firsthand after that experience with little James. Although, it had been real cute how defensive James was of him even when he didn't know him.
"But yeah," Sirius agreed again. "Wee Snape is fucking weird."