They Apparated and bounced and rolled as if those motions too were just a extension of a wild Apparation ride across the castle corridors, walls, and doors.
Held throughout it, Al felt the laughter in him bubbling up, he rolled and climbed until he was sitting firmly on top, his knees against Severus' elbows, his weight pinning Severus down, and only then lifted his arms in a silent salute.