When Harry returned to his dorm, Sirius was already there, waiting for him. He had risked changing into human form and was sitting cross-legged on Harry's bed, bouncing a little with excitement and grinning like the lunatic he was. His black t-shirt was on full display, showing off the slogan Hella Proud Dogfather in bold white letters. When he spotted his godson, he lit up even further.
"Congratulations, Harry! That was wicked flying back there! I can't believe you pulled that off!" He came bounding across the room and swept his godson into a side hug, punching his arm playfully. "I can already tell you're going to be even better than your father."
Harry beamed. "I left Malfoy in the dust, didn't I?"
"That you did, pup."
"By the way, cool shirt!"