"An hallucination," he explains slowly, "would deceive your senses." Tilting his head, "Sou ka? What sorts of myths?"
"The boards are a bread in a sandwich of you." He gives Rincewind a smile clearly illustrating that Rincewind's value as sandwich meat has not yet been completely decided. "The targets can be painted on. Or," he adds cheerfully, "just be assumed to exist. Which is more the case since we're only speaking metaphorically, after all."
Xellos is sweatdropping when he turns back around. "Anou, very nice, Scraggly-san, but I can't count it. Since you forgot to put the plate back on." He points to the lonely flatware, lying in the middle of a colored path.
Am assuming he forgot the head-plate, since he was doing all that bending.