Magnus gives Galahad a rueful little smile. "Sorry I can be Questions Guy sometimes, by the way," he says, still signing. "Let me think. Um." He holds his right arm out, flat from palm to elbow. "I'm doing this this way because I'm left-handed, by the way," he says. "The non-dominant arm is flat." Then he strokes his left hand over his right hand, down to his wrist. "That's 'slow down.' Slow down, please is--" He repeats the motion, and then moves his hand straight on to rubbing his chest, small circles.

"Then we have wait, hold on, and too much," he says, demonstrating each sign twice before moving on to the next one.