This has stuck with me for years.

“Yes, yes,” said Bethan, sitting down glumly. “I know you don’t. Rincewind, all the shops have been smashed open, there was a whole bunch of people across the street helping themselves to musical instruments, can you believe that?”

“Yeah,” said Rincewind, picking up a knife and testing its blade thoughtfully. “Luters, I expect.”

Excerpt From The Light Fantastic

Great author.