It's rude to stare," said the troll. Its mouth opened with a little crest of foam, and shut again in exactly the same way that water closes over a stone. "Is it? Why?" asked Rincewind. How does he hold himself together, his mind screamed at him. Why doesn't he spill? - Terry Pratchett
Rincewind had been told that death was just like going into another room. The difference is, when you shout, 'Where's my clean socks?' no-one answers. - Terry Pratchett
Tourist, Rincewind decided, meant "idiot". - Terry Pratchett