"M-m-my hat?" Rincewind stammers. He reaches up to touch it gingerly, in case it's been infested with .303 bookworms or worse. Finding all as it should be, and dislodging a few more sequins, Rincewind stares, puzzled. "What about my hat? It's a perfectly normal wizard hat," he says, a tiny bit defensively, all evidence to the contrary.