We're dealing here,' said Vimes, 'With a twisted mind.'Oh, no! You think so?'Yes.'But... No... You can't be right. Because Nobby was with us all the time.'Not Nobby,' said Vimes testily. 'Whatever he might do to a dragon, I doubt if he'd make it explode. There's stranger people in this world than Corporal Nobbs, my lad.'Carrot's expression slid into a rictus of intrigued horror.'Gosh,' he said.