"What's the footie?" Peter asked, while struggling to get his own footies... er, feet on the bed. Sirius helpfully offered him a hand and pulled him up then tried to figure out whether the footie thing was more important than explaining quidditch. Hard to say. "You play it on brooms. There is a keeper and there are chasers and beaters and the seeker, he's the most important."

He nodded his head, while Peter looked at his feet. He was trying to figure this out.