No, Magnus can't, but he can't shake his conviction he's right anyway. "I don't know it, but I believe it," he tells Galahad, and then -- as a peace offering, since he's pretty sure Galahad didn't mean for the conversation to move in this direction, like, at all, he says, "So about his mouth. There's, like -- the sides of it make it look like even if he's not smiling in the moment, his mouth is built for it." He gestures to the corners of his own lips, trying to convey the shape of the vibe.