““What about the Vimes manual, then?" snapped Vimes. "I notice you've never bothered to learn how to use me!" The demon hesitated. "Humans come with a manual?" it said. "It'd be a damn good idea!" said Vimes. "True," murmured Angua. "It could say things like 'Chapter One: Bingeley bingeley beep and other damn fool things to spring on people at six in the morning," said Vimes, his eyes wild. "And 'Troubleshooting: my owner keeps trying to drop me in the privy, what am I doing wrong?””