"I'm right about a lot," he answered, ruffling Sirius' hair. "You'll learn."
James wished that he could will Sirius to suck him with his eyes, because he could not move his eyes from Sirius and his mouth. He could feel his heart speed up and he tried to take deep breaths, and then Sirius was doing what he wanted and all attempts at calm ended.
"Fuck... that's... not quite brilliant," he said with a chuckle, because he couldn't give in so quickly even if it was brilliant, and not just brilliant because someone had a cock in his mouth, but really, really brilliant, in a way that girls never seemed to get right.
He could feel the blush raise from his chest to his cheek as Sirius touched him in ways that no one ever had, but it was too good to stop.