- "Pull me up, then," he hinted. 
- "I think that might be sort of difficult," grunted Twoflower. "I don't 
  actually think I can do it, in fact." 
- "What are you holding on to, then?" 
- "You." 
- "I mean besides me." 
- "What do you mean, besides you?" said Twoflower. 
        -- (Terry Pratchett, The Light Fantastic)