Al chuckled. "I suppose if a magical charge zaps hard enough to fling someone backwards, it would be hard to miss."
He slid his arms around Severus and pressed his face against his shoulder. "Right then. Small, practiced behaviour changes."
He inhaled Severus' scent and took refuge in it. "Ordinary people smile, touch body parts, and state their sorrow too often for it to be true. I might start there."