Magnus nods seriously, sitting up a little straighter. "That one is based off of the alphabet," he says. "The pinky extended -- I. The thumb and index finger? L. The thumb and pinky is Y. Sometimes, when people are coy," like the time in the Chase Space when they were pulling together a tiny birthday celebration for one of the kids, and Magnus ducked into the kitchen for the cake Hearth and Blitzen were putting the finishing touches on, and found them flirting instead, "They'll introduce the little finger first." He shows this, like a slow unfurling of his hand.